ChatGPT answers, unedited

If you mean hundreds of thousands of completed WooCommerce orders per month, rather than just hundreds of thousands of visitors, I would treat this as an enterprise WooCommerce architecture problem—not simply “pick a fast WordPress host.”

My top choices

1. kinsta.com — my first choice for most businesses

• Managed infrastructure, isolated containers, Cloudflare CDN/edge caching, Redis, APM, backups and 24/7 support.
• Kinsta specifically offers dedicated/custom infrastructure for resource-intensive and mission-critical WooCommerce stores. Kinsta® Kinsta®
• Their architecture gives you considerably more operational simplicity than building AWS infrastructure yourself.
• I'd want a custom/dedicated configuration, not a basic shared WooCommerce plan, at your transaction volume.
• AWS — best if you have a serious DevOps/backend team

• I would build WooCommerce on a containerized architecture with dedicated database infrastructure, Redis/ElastiCache, CloudFront/WAF, object storage, queues/workers, monitoring, automated failover and aggressive staging/load testing.
• This gives you substantially more control and a path to horizontal scaling, but it also gives you substantially more things that can break.
• At hundreds of thousands of transactions/month, AWS starts making a lot of sense if the business can justify dedicated engineering/DevOps.
• WP Engine / other premium managed WordPress infrastructure

• Worth evaluating, particularly if you want managed WordPress rather than AWS.
• But I'd require them to demonstrate capacity for your actual checkout/order-write workload, not just quote a visitor count.

The important distinction

300,000 transactions/month is only ~10,000 orders/day, or ~7 orders/minute averaged across the month. That's not inherently an enormous number.

The difficult part is peak concurrency.

For example, if you normally do 10 orders/minute but a promotion produces 100 orders/minute for 20 minutes, you're dealing with a very different infrastructure problem. And checkout is exactly where you can't rely on ordinary page caching.

WooCommerce's High-Performance Order Storage (HPOS) is particularly important here. It moves order data into dedicated, indexed WooCommerce tables rather than relying on the traditional WordPress post/postmeta structure, specifically improving scalability and reducing database contention. The WooCommerce Developer Blog WooCommerce

What I'd insist on

For your volume, I would want roughly this architecture:

                    Cloudflare / CDN / WAF
                            │
                    Load balancing / edge
                            │
                 ┌──────────┴──────────┐
                 │                     │
           WordPress/WooCommerce  WordPress/WooCommerce
                 │                     │
                 └──────────┬──────────┘
                            │
                         Redis
                            │
                     Primary MySQL
                            │
                 ┌──────────┴──────────┐
                 │                     │
            Read replica          Backups/DR

                    ↓
              Queue / Workers
          emails, webhooks, feeds,
          fulfillment, integrations

The queue/worker layer becomes especially important if you're processing things like ERP synchronization, inventory, shipping, subscriptions, marketing integrations, accounting, email, etc. You don't want a slow third-party API call holding up the customer's checkout request.

One thing I'd specifically avoid

I would not put this store on a typical $30–$100/month “managed WordPress” plan and assume that a high visitor allowance means it can handle 300k orders.

WooCommerce checkout requests are dynamic and aren't handled like cached page views. Kinsta's documentation, for example, explicitly notes that checkout isn't cached and that uncached requests consume PHP threads; insufficient concurrent PHP capacity can result in queues and eventually 502/504 errors. Kinsta® Kinsta®

Persistent Redis/object caching is also important for reducing database load. Kinsta® Kinsta®

What I'd choose

For most companies, I'd start by talking to Kinsta's enterprise team. Their current infrastructure supports isolated containers, Redis, edge caching, dedicated servers and custom configurations, which is a much better fit than trying to force a high-volume store onto a standard WordPress plan. Kinsta® Kinsta®

If you tell me roughly orders/month, peak orders/minute, number of SKUs, concurrent users, subscriptions or one-time orders, and whether you have developers/DevOps, I can recommend a specific architecture and approximate server/database sizing rather than just a hosting company.

If you mean hundreds of thousands of orders/transactions per month, I would not put the store on ordinary shared WordPress hosting. WooCommerce itself can scale to very high order volumes, but the architecture around PHP, MySQL, caching, and background jobs becomes the important part. WooCommerce says enterprise stores can handle tens of thousands of orders per day with appropriate infrastructure. woocommerce.com

My shortlist

For most businesses, I'd start with managed enterprise hosting rather than DIY cloud. WooCommerce itself lists Pressable and WordPress VIP among its recommended hosting solutions, with WordPress VIP specifically positioned for enterprise workloads. woocommerce.com

What I'd want the architecture to look like

For, say, 200k–500k orders/month, I'd want:

• Dedicated/isolated compute, not shared hosting
• Cloudflare/CDN + WAF
• Redis object caching
• High-performance MySQL, with sufficient CPU/RAM and fast SSD
• WooCommerce HPOS enabled — it moves orders into dedicated tables designed for ecommerce workloads. woocommerce.com
• Aggressive caching for catalog/product pages while excluding cart, checkout, account, and other dynamic requests. developer.woocommerce.com
• Plenty of PHP workers/threads, because checkout and other uncached requests consume them. kinsta.com
• Separate handling for Action Scheduler/background jobs
• Automated backups, ideally with off-site copies
• Staging environment
• Application-performance monitoring
• Load testing against checkout/order creation, not just homepage pageviews
• Redundant infrastructure where downtime has significant financial consequences

Kinsta is an interesting middle ground

Kinsta is worth considering if you want someone else to manage much of the infrastructure. Its current WooCommerce platform uses isolated containers, scalable resources, Cloudflare, edge caching, and offers dedicated servers and Redis as options. kinsta.com

Kinsta WooCommerce hosting

However, at hundreds of thousands of transactions/month, I'd talk to Kinsta about an enterprise/dedicated configuration, rather than simply buying one of their standard plans.

When I'd choose AWS instead

If this is a genuinely mission-critical operation—e.g. 300k+ orders/month, major traffic spikes, multiple integrations, ERP synchronization, large catalog, or substantial B2B traffic—I'd lean toward an architecture such as:

CloudFront/Cloudflare → load balancer → multiple WordPress/PHP application nodes → managed MySQL/Aurora → Redis → object storage → separate workers

That gives you substantially more control over scaling and failure isolation, but requires a competent DevOps/platform team. You're essentially building an ecommerce platform rather than buying hosting.

One important distinction

Hundreds of thousands of transactions/month isn't necessarily the difficult part.

300,000 orders/month averages only about 0.116 orders/second. The real challenge is what happens during peaks.

For example, if 300k monthly orders are concentrated into a few hours during promotions, you could have hundreds or thousands of concurrent checkout/order requests. That's where PHP workers, database locking, payment APIs, plugins, and background jobs can become bottlenecks.

So I would size the infrastructure around your peak orders/minute and concurrent checkout requests, not the monthly number.

If you tell me roughly monthly orders, peak orders/minute, number of SKUs, average traffic, and whether you're B2C or B2B, I can give you a concrete architecture and approximate server/database sizing.

Yes. Hundreds of thousands of WooCommerce transactions per month is absolutely achievable, but at that scale I would stop thinking in terms of “WordPress hosting” and start thinking about high-availability ecommerce infrastructure.

WooCommerce itself says stores at the 100k–200k order/month range should start looking at horizontal scaling, rather than simply putting the site on a larger single server. developer.woocommerce.com

My shortlist

WooCommerce itself currently recommends Pressable and WordPress VIP among its hosting solutions, and specifically describes VIP as enterprise-grade infrastructure serving extremely high-volume sites. woocommerce.com

If it were my store

For 100k–300k+ transactions/month, I'd seriously investigate Pressable Enterprise first.

Pressable currently advertises:

• automatic scaling to 100+ CPUs
• geo-redundant high availability
• enterprise caching
• hourly/daily backups
• 100% uptime guarantee on its premium plans
• dedicated resources and custom scaling
• support for millions of monthly visits pressable.com

There's also some unusually relevant real-world testing: a WooCommerce agency tested Pressable, Kinsta, WP Engine, Cloudways, Nexcess, Rocket.net, etc. under simulated loads involving thousands of concurrent users and transactions. In that particular test, Pressable handled 5,000 concurrent bots without timeouts, although I'd treat this as one site's benchmark rather than a universal ranking. pressable.com

The architecture matters more than the host

At this volume, I would want something roughly like:

                    CDN / WAF
                       │
                Load Balancer
                       │
             ┌─────────┴─────────┐
             │                   │
         Web/PHP #1          Web/PHP #2
             │                   │
             └─────────┬─────────┘
                       │
                 Redis/Object Cache
                       │
                ┌──────┴──────┐
                │             │
          Primary DB      Read replicas
                │
          WooCommerce DB
                │
       Backups / replication

And importantly, checkout, cart, account pages and other dynamic WooCommerce operations cannot simply be treated like cached WordPress pages. Kinsta, for example, explicitly excludes cart, checkout and account pages from its normal caching because they need current customer/order state. kinsta.com

One important distinction

If by “hundreds of thousands of monthly transactions” you mean:

200,000 orders/month

that's about 6,700 orders/day, or an average of only ~4.6 orders/minute.

That's not particularly frightening from a raw throughput standpoint.

But if you mean:

200,000 orders/month + millions of visitors + large catalog + complex promotions + subscriptions + ERP/CRM integrations + frequent flash-sale spikes

then infrastructure becomes considerably more demanding.

The peak transaction rate and concurrent checkout load matter much more than the monthly order number. WooCommerce specifically points to traffic distribution, plugins/custom code, and server hardware as major scaling factors. woocommerce.com

What I'd avoid

I would not put a business doing this volume on:

• ordinary shared WordPress hosting
• a single $50–$200 VPS
• a single unmanaged EC2 instance
• a host where scaling means manually resizing the server
• a setup without redundant database/backup infrastructure

And I'd be particularly wary of optimizing solely for page-load benchmarks. WooCommerce checkout/database performance is what you need to load-test.

My recommendation

If you're looking for “I want this to run reliably and don't want to build a DevOps organization”:

Pressable Enterprise → first choice.

If you're a large organization where downtime is extraordinarily expensive:

WordPress VIP / enterprise managed infrastructure.

If you have strong engineering/DevOps capabilities and want maximum control:

AWS/GCP + horizontally scaled WooCommerce architecture is potentially the strongest long-term solution.

If you tell me roughly (1) monthly orders, (2) peak orders/minute, (3) monthly visitors, (4) SKU count, (5) subscriptions or not, and (6) your approximate hosting budget, I can narrow this down to a specific architecture and likely monthly cost.

Yes. For hundreds of thousands of WooCommerce transactions per month, I would not treat this as a normal “WordPress hosting” problem. The important metric is uncached checkout/order workload, not page views.

My shortlist

WooCommerce itself says it can scale to large enterprises, and specifically notes that traffic distribution and the nature of the workload are major factors in scaling—not simply the number of orders. WooCommerce

What I'd choose

For, say, 200k–500k transactions/month, I'd seriously consider Kinsta Enterprise with a dedicated VM, Redis/object caching, CDN/WAF, and a properly tuned database.

Kinsta currently offers enterprise configurations with custom resources, dedicated VMs, up to a 99.99% uptime SLA, continuous MySQL optimization, APM, WAF/DDoS protection, 30-day backups, and account management. Its enterprise plans start at $500/month, with the actual configuration customized to the workload. Kinsta® Kinsta®

kinsta.com

But I would not simply buy the biggest Kinsta plan and call it done.

For this volume, I'd architect it roughly like:

                    Cloudflare
                        │
              CDN / WAF / DDoS
                        │
              ┌─────────┴─────────┐
              │   Load balancing  │
              └─────────┬─────────┘
                        │
              ┌─────────┴─────────┐
              │ WooCommerce/PHP   │
              │ application tier  │
              └─────────┬─────────┘
                        │
             ┌──────────┴──────────┐
             │                     │
          Redis                 MySQL
       object cache        properly provisioned
             │                     │
             └──────────┬──────────┘
                        │
                 Backups / replicas

The critical part is that checkout, cart, account, payment callbacks and order creation cannot be treated like ordinary cached WordPress traffic.

Kinsta explicitly supports Redis for reducing MySQL load and has dedicated-server options for resource-intensive, high-traffic, mission-critical sites. Kinsta®

One important distinction

300,000 transactions/month is actually ~10,000 orders/day, or ~7 orders/minute on average.

That's not inherently an enormous database workload.

The real question is your peak concurrency.

For example:

• 300k orders/month
• 10k/day average
• 417/hour average
• ~7/minute average
• but perhaps 100–300 orders/minute during a major promotion

That peak can be dramatically harder than the monthly number suggests.

And WooCommerce has a lot of synchronous work around each order: inventory, taxes, shipping, payment gateway calls, webhooks, subscriptions, emails, analytics, third-party plugins, etc.

If you're really at enterprise scale

If you're talking about something like 500k–1M+ orders/month, I'd start considering a more customized architecture rather than relying entirely on a conventional managed WordPress host.

At that point I'd look at:

AWS/GCP + managed WordPress/WooCommerce architecture

with:

• multiple PHP application nodes
• managed MySQL/Aurora
• Redis/ElastiCache
• CloudFront/Cloudflare
• object storage
• queue workers
• separate cron/worker infrastructure
• database read replicas where appropriate
• centralized logging/APM
• automated failover
• infrastructure-as-code
• aggressive load testing

The upside is essentially unlimited room to scale. The downside is that you now own the architecture and operational complexity.

My recommendation by scale

100k–300k transactions/month:
→ Kinsta Enterprise or WP Engine Enterprise. Keep it managed.

300k–1M/month:
→ Kinsta Enterprise or WP Engine Enterprise with a custom architecture review, Redis, dedicated resources, serious monitoring and load testing.

1M+/month or extremely high peak concurrency:
→ I'd seriously evaluate AWS/GCP custom WooCommerce infrastructure or an enterprise WordPress platform such as WordPress VIP.

WooCommerce itself lists WordPress VIP as an enterprise-grade option and says its platform serves customers at extremely large scale. WooCommerce

The bigger issue: your WooCommerce database

At this transaction volume, database design and plugin behavior can matter more than the hosting provider.

I'd want to know:

1. Orders/month
2. Peak orders/minute
3. Concurrent shoppers during peak
4. Number of products/variations
5. Number of historical orders
6. Subscriptions or one-time purchases
7. Payment gateway
8. Number of WooCommerce plugins
9. Whether you have ERP/CRM/inventory integrations
10. Current database size
11. Whether HPOS is enabled
12. Traffic/page views per month

If you give me those numbers, I can recommend a specific architecture and approximate server/database sizing for 100k, 300k, and 1M transactions/month rather than just picking a hosting company.

1M+/month or extremely high peak concurrency:
→ I'd seriously evaluate AWS/GCP custom WooCommerce infrastructure or an enterprise WordPress platform such as WordPress VIP.

WooCommerce itself lists WordPress VIP as an enterprise-grade option and says its platform serves customers at extremely large scale.

The bigger issue: your WooCommerce database

The critical part is that checkout, cart, account, payment callbacks and order creation cannot be treated like ordinary cached WordPress traffic.

Kinsta explicitly supports Redis for reducing MySQL load and has dedicated-server options for resource-intensive, high-traffic, mission-critical sites. Kinsta®

One important distinction

300,000 transactions/month is actually ~10,000 orders/day, or ~7 orders/minute on average.

That's not inherently an enormous database workload.

The real question is your peak concurrency.

For example:

• 300k orders/month
• 10k/day average
• 417/hour average
• ~7/minute average
• but perhaps 100–300 orders/minute during a major promotion

That peak can be dramatically harder than the monthly number suggests.

And WooCommerce has a lot of synchronous work around each order: inventory, taxes, shipping, payment gateway calls, webhooks, subscriptions, emails, analytics, third-party plugins, etc.

If you're really at enterprise scale

If you're talking about something like 500k–1M+ orders/month, I'd start considering a more customized architecture rather than relying entirely on a conventional managed WordPress host.

At that point I'd look at:

AWS/GCP + managed WordPress/WooCommerce architecture

with:

• multiple PHP application nodes
• managed MySQL/Aurora
• Redis/ElastiCache
• CloudFront/Cloudflare
• object storage
• queue workers
• separate cron/worker infrastructure
• database read replicas where appropriate
• centralized logging/APM
• automated failover
• infrastructure-as-code
• aggressive load testing

The upside is essentially unlimited room to scale. The downside is that you now own the architecture and operational complexity.

My recommendation by scale

100k–300k transactions/month:
→ Kinsta Enterprise or WP Engine Enterprise. Keep it managed.

300k–1M/month:
→ Kinsta Enterprise or WP Engine Enterprise with a custom architecture review, Redis, dedicated resources, serious monitoring and load testing.

1M+/month or extremely high peak concurrency:
→ I'd seriously evaluate AWS/GCP custom WooCommerce infrastructure or an enterprise WordPress platform such as WordPress VIP.

WooCommerce itself lists WordPress VIP as an enterprise-grade option and says its platform serves customers at extremely large scale.

The bigger issue: your WooCommerce database

For hundreds of thousands of WooCommerce transactions per month, you are beyond normal “managed WordPress hosting.” You need an enterprise WooCommerce architecture where the database, checkout path, background jobs, and traffic spikes are designed for commerce workloads. WooCommerce itself can scale to very large stores, but the hosting stack and optimization are usually the limiting factors. woocommerce.com

A few solutions I would consider:

For hundreds of thousands of monthly transactions, I would usually avoid:

• Shared hosting
• Basic VPS plans
• Generic WordPress hosts
• A single large server with no redundancy

A production-grade WooCommerce setup would typically look like:

Frontend

• CDN + WAF (Cloudflare Enterprise or equivalent)
• Multiple application servers behind a load balancer

WooCommerce layer

• Multiple PHP workers
• Redis object cache
• Full-page caching where possible
• Optimized checkout paths (checkout/cart usually cannot be cached)

Database

• Dedicated MySQL/MariaDB server
• Read replicas if reporting/search load is heavy
• Regular query optimization
• Database monitoring (New Relic, Percona tools, etc.)

Background processing

• Separate workers for:
  • order emails
  • inventory sync
  • ERP integrations
  • subscription renewals
  • analytics exports

Reliability

• Automated backups
• Staging environment
• Disaster recovery plan
• Load testing before major campaigns

A rough sizing guide:

• 100k–300k orders/month: Managed enterprise WooCommerce host (Liquid Web, Servebolt, Pressable, Convesio) is often sufficient.
• 300k–1M+ orders/month: Consider a custom cloud architecture or enterprise hosting with dedicated database infrastructure.
• Millions/month: Treat WooCommerce like a distributed commerce platform with dedicated engineering support.

The biggest factors that change the recommendation are:

1. Average orders/day and peak orders/minute during sales
2. Number of SKUs
3. Number of concurrent shoppers during peaks
4. Plugins (subscriptions, memberships, ERP, marketplaces, custom checkout)
5. Current monthly revenue and acceptable downtime window

If you share those numbers, I can suggest a more precise architecture and likely monthly hosting budget.

Yes. Hundreds of thousands of WooCommerce transactions/month is absolutely achievable, but I would not choose hosting based on “monthly transactions” alone. The important metrics are orders per minute, concurrent checkout activity, catalog size, database workload, and traffic spikes.

For that scale, my shortlist would be:

1. Cloudways Autonomous — probably where I'd start

Cloudways WooCommerce hosting

Cloudways' current Autonomous platform is particularly interesting for your use case because it uses Kubernetes-based autoscaling and load balancing, Cloudflare Enterprise, Redis/Object Cache Pro, automated backups, and high availability. Their higher tiers are explicitly designed for large-scale applications. www.cloudways.com

I'd seriously consider their Scale/Plus/Enterprise configurations rather than trying to squeeze a large store onto a conventional VPS.

2. Kinsta — excellent if you want somebody else managing the infrastructure

Kinsta WooCommerce hosting

Kinsta provides isolated containers, automatic resource allocation, scaling for traffic spikes, monitoring/APM, and dedicated-server options for resource-intensive, mission-critical sites. kinsta.com

For a business doing hundreds of thousands of orders, I'd talk to Kinsta's enterprise team rather than simply selecting a standard advertised plan.

3. WordPress VIP — if downtime is extremely expensive

WordPress VIP

WooCommerce itself lists WordPress VIP among its recommended hosts and describes it as enterprise-grade hosting, with customers handling billions of page views. woocommerce.com

This is the option I'd investigate if you're talking about a large retailer where a checkout outage can cost tens or hundreds of thousands of dollars.

4. AWS — if you have serious engineering resources

For the absolute highest ceiling, I'd build WooCommerce as a properly distributed architecture rather than putting WordPress on a giant EC2 instance.

Something along the lines of:

CloudFront/Cloudflare → load balancer → multiple PHP/WordPress instances → Redis → Aurora/MySQL → S3/EFS

with separate workers for WooCommerce background jobs and aggressive database optimization.

A modern AWS architecture can put components across multiple Availability Zones and scale ECS, storage, and Aurora independently. www.infrasource.io

The downside is that you now own the complexity.

The architecture matters more than the host

At 100k–500k+ transactions/month, I would specifically require:

• Multiple application/PHP workers
• Managed MySQL with strong IOPS
• Redis object caching
• CDN/WAF such as Cloudflare
• Load balancing
• Automated off-site backups
• Database replication/failover
• Staging environment
• Queue/background-job infrastructure
• New Relic/Datadog or equivalent monitoring
• Proper handling of WooCommerce Action Scheduler
• Database/index optimization
• Ability to add application servers without migrating the store
• A tested disaster-recovery procedure

WooCommerce itself notes that traffic distribution is one of the biggest factors affecting scaling, and that WooCommerce can scale to large numbers of products, customers, orders, subscriptions and transactions when properly architected. woocommerce.com

One important distinction

300,000 orders/month isn't necessarily harder than 30,000 orders/month.

For example:

• 300k orders/month spread evenly = ~7 orders/minute
• 300k orders/month concentrated into a few hours = potentially hundreds/thousands of orders/minute
• A Black Friday event with 50,000 people simultaneously browsing/checkout can be much harder than the monthly order count suggests.

So if you're actually talking about hundreds of thousands of completed transactions per month, I'd lean toward Cloudways Autonomous or Kinsta Enterprise for a managed solution, and AWS if you have an experienced infrastructure team.

If you tell me roughly orders/month, peak orders/minute, number of products, average concurrent visitors, and whether you're using subscriptions/complex plugins, I can recommend a specific architecture and approximate server/database sizing.

Yes. Hundreds of thousands of WooCommerce transactions per month is enterprise-scale, and I would avoid ordinary shared hosting or a single “big VPS.” The important distinction is that transactions/orders are more demanding than pageviews because checkout, payment callbacks, inventory, order creation, webhooks, and admin operations all hit PHP/database resources.

My shortlist

1. Cloudways Autonomous — my first choice for many businesses

Cloudways now has an autoscaling WooCommerce architecture on Google Kubernetes Engine, rather than simply putting WooCommerce on a larger server. It can add capacity when traffic increases and scale back afterward. It also provides Cloudflare Enterprise, Redis/object caching, and managed infrastructure. www.cloudways.comkinsta.comkinsta.comwoocommerce.com

That's particularly attractive if you're dealing with unpredictable peaks—e.g. 300,000 orders/month normally but enormous bursts around promotions.

I'd want them to architect the database/resources specifically around your order volume rather than simply selecting a generic plan.

2. Kinsta Enterprise WooCommerce — excellent premium choice

Kinsta has isolated containers, global CDN/edge caching, enterprise Cloudflare security, APM monitoring, and infrastructure designed for traffic spikes. kinsta.com

One important nuance: don't judge Kinsta purely by its standard WooCommerce plans for this workload. I'd talk to their enterprise team and have them size the environment around your actual concurrency, checkout rate, database size, and peak TPS.

Kinsta also added automatic horizontal scaling to its application platform in 2026, which shows they're moving further toward elastic infrastructure. kinsta.com

3. WordPress VIP — if downtime is extremely expensive

WooCommerce itself lists WordPress VIP among its recommended enterprise hosting options and describes it as enterprise-grade infrastructure serving very large sites. woocommerce.com

This is the direction I'd investigate if you're talking about a major retailer doing hundreds of thousands to millions of orders, with serious engineering/support requirements.

But hosting isn't the whole solution

At this scale, I'd architect WooCommerce approximately like:

Cloudflare → CDN/WAF → multiple WooCommerce application nodes → Redis → highly available database → object/media storage

And I'd specifically require:

• WooCommerce HPOS enabled — WooCommerce's High-Performance Order Storage moves orders into dedicated tables designed for ecommerce workloads. woocommerce.com
• Redis/object caching
• CDN for all cacheable assets
• Multiple PHP application workers/nodes
• Database replication/high availability
• Automated backups + tested restoration
• Queue/background processing for expensive jobs
• Separate handling for webhooks and payment callbacks
• Staging environment
• Application performance monitoring
• Load testing against checkout, not just homepage traffic
• A strategy for database growth and order-table maintenance
• No poorly written plugins doing synchronous work during checkout

One number I'd want before choosing

“300,000 transactions/month” sounds huge, but averages are misleading.

300,000/month ≈ 10,000 orders/day ≈ 417 orders/hour ≈ 7 orders/minute.

That's actually not particularly terrifying for a properly designed system.

But if those 300,000 orders concentrate into, say, two hours during a daily sales window, you're suddenly at ~42 orders/minute. And if a marketing event produces 10× the normal traffic while customers browse/search/add-to-cart, the infrastructure requirement becomes dramatically different.

So I'd size the system around peak concurrent users + checkout requests/second + database workload, not monthly transaction count.

What I'd choose

If this were my project:

<$10M-ish annual GMV / moderate engineering team:
→ Cloudways Autonomous, properly architected and load-tested.

Large established retailer / revenue-critical store:
→ Kinsta Enterprise or WordPress VIP.

Millions of orders, complex integrations, international scale, or an internal DevOps team:
→ AWS/GCP custom WooCommerce architecture, potentially with WooCommerce as the commerce engine but heavily decoupling search, queues, media, analytics, and other workloads.

I would not put a store doing this volume on ordinary SiteGround/Bluehost/Hostinger-style shared or entry-level WooCommerce hosting, regardless of how good the advertised “monthly visitors” number looks.

If you tell me roughly how many orders/month, peak orders/minute, number of SKUs, database size, and whether you need subscriptions/B2B/multiple stores, I can give you a much more concrete architecture and likely monthly hosting budget.

If you mean hundreds of thousands of completed orders/transactions per month, rather than merely hundreds of thousands of page views, I’d treat this as an enterprise WooCommerce architecture problem—not a “pick a faster WordPress host” problem.

My shortlist

1. Nexcess — my first choice for your scenario.

Nexcess specifically positions its WooCommerce platform for high transaction volumes and seasonal demand, with autoscaling, Redis/object caching, CDN, monitoring, and WooCommerce-focused support. Its higher WooCommerce tiers can automatically increase PHP workers during traffic spikes. www.nexcess.com

Nexcess WooCommerce hosting

2. Kinsta — probably my second choice.

Kinsta runs each site in an isolated container on Google Cloud infrastructure and provides Cloudflare integration, edge caching, APM, and scalable resources. Its WooCommerce platform specifically handles dynamic pages such as cart, checkout, and My Account differently from cacheable content. kinsta.com

Kinsta WooCommerce hosting

3. Cloudways Autonomous — interesting if traffic is highly variable.

Cloudways' current ecommerce offering includes Redis, object caching, Cloudflare Enterprise CDN and autoscaling. Its Autonomous product uses Google Kubernetes Engine for horizontal scaling, which is much closer to the architecture I'd want when traffic can suddenly become enormous. www.cloudways.com

Cloudways ecommerce hosting

The important distinction

300,000 orders/month is only ~0.12 orders/second on average.

That sounds surprisingly small, but averages are misleading. The hard part is usually concurrent checkout activity, admin/API traffic, payment webhooks, product searches, inventory updates, and database writes, particularly during promotions.

For a store doing this volume, I'd want approximately:

• Multiple application/PHP workers/instances
• Redis object caching
• A properly tuned MySQL database
• CDN/edge caching for catalog and static content
• Cart/checkout/order endpoints excluded from inappropriate full-page caching
• Database backups with point-in-time recovery
• Staging environment
• Load testing against real WooCommerce workflows
• Monitoring/APM
• Payment webhook redundancy
• Queue/background processing for non-critical work
• A plan for scaling the database independently of web servers

WooCommerce itself recommends OPcache, CDN, and persistent object caching as foundational components, and specifically calls out autoscaling as stores grow beyond the baseline architecture. developer.woocommerce.com

What I'd actually deploy

For 300k–1M orders/month, I'd be comfortable starting with something like:

Cloudflare → CDN/WAF → 2+ WooCommerce application nodes → Redis → dedicated MySQL → object/storage layer → queue/workers

rather than:

one giant WordPress server → MySQL

The latter can be surprisingly fast right up until it isn't.

If you tell me roughly orders/month, peak orders/minute, number of products/SKUs, concurrent visitors, geographic audience, and whether you need PCI scope minimized, I can give you a much more concrete architecture and approximate monthly hosting budget.

If you mean hundreds of thousands of completed WooCommerce orders per month—not just page views—I would treat this as an enterprise WooCommerce infrastructure problem, not a normal “managed WordPress hosting” purchase.

My shortlist

WooCommerce itself is capable of very large stores; WooCommerce specifically notes that it runs its own platform at substantial scale and that traffic distribution, database workload, and order volume are major factors in scaling. woocommerce.com

My first choice: Nexcess

Nexcess WooCommerce hosting would be the first provider I'd talk to.

Their current WooCommerce platform is specifically positioned for high transaction volume, with automatic scaling, performance optimization, monitoring, and PCI-oriented infrastructure. www.nexcess.com

The particularly important part for your use case is that Nexcess has worked specifically on WooCommerce order-storage performance, rather than simply throwing more CPU at WordPress. www.nexcess.net

But I'd architect it differently than a normal WooCommerce site

For 100k+ orders/month, I'd want approximately:

CDN/WAF → load balancer → multiple PHP application nodes → Redis/object cache → dedicated database infrastructure → separate background workers

And I'd make sure:

• Checkout/cart aren't cached
• Product/category traffic is aggressively cached at the edge
• Redis/object caching is used
• Database is optimized and monitored independently
• WooCommerce Action Scheduler jobs don't compete with checkout requests
• Image/media delivery is offloaded to CDN/object storage
• Backups are continuous and tested
• Staging/load-testing environment exists
• Database replicas are considered for read-heavy workloads
• PHP workers can scale horizontally
• Monitoring tracks checkout latency, failed orders, payment callbacks, DB locks, queue depth and PHP saturation, not merely CPU utilization

Kinsta's current WooCommerce architecture, for example, provides isolated containers, scalable resources, edge caching, dedicated-server options and PHP-worker scaling, making it a reasonable alternative worth benchmarking. kinsta.com

One important distinction

100,000 orders/month is only about 2.3 orders/minute on average.

That doesn't sound enormous—but the average is almost irrelevant. If you have 100k/month concentrated around promotions, you might have hundreds or thousands of simultaneous checkout/order operations.

For example, I'd rather design for:

500k orders/month + 10–20× peak traffic + 99.99% checkout availability

than buy a server advertised as being able to handle “500k orders/month.”

If this is genuinely mission-critical

If losing checkout for 30 minutes costs you significant money, I'd seriously consider WordPress VIP or a custom cloud architecture. WooCommerce itself lists WordPress VIP among its recommended enterprise hosting options, and VIP operates a managed stack involving Kubernetes, MySQL, Memcached, Valkey, Elasticsearch, etc. woocommerce.com

My recommendation: start with Nexcess managed WooCommerce, but have them size the environment against your peak concurrent checkouts and order writes, not your monthly order count.

If you tell me roughly orders/month, peak orders/minute, number of products, average concurrent shoppers, and whether you use subscriptions, I can sketch the actual architecture (servers, database, Redis, CDN, queues, and approximate monthly cost) I'd use for it.

Yes—but at hundreds of thousands of WooCommerce transactions per month, I would stop thinking in terms of “WordPress hosting” and start thinking in terms of high-availability commerce infrastructure.

My shortlist

Liquid Web's current enterprise WooCommerce offering is particularly relevant: it supports custom-built clusters, custom PHP workers, resource planning around peak traffic, 24/7/365 enterprise support, and infrastructure designed around the store's SKU/catalog and traffic characteristics. www.liquidweb.com

Their managed WooCommerce platform also advertises autoscaling PHP workers, a 99.99% uptime guarantee, database optimization, CDN, WAF/DDoS protection, staging, and transaction monitoring. www.liquidweb.com

Liquid Web Enterprise WooCommerce

The important part: transactions ≠ visitors

300,000 orders/month averages only about 0.116 orders/second. That's not inherently enormous.

The real challenge is what happens during peaks.

For example, if you have:

• 300k orders/month
• 10× peak concentration
• 100,000–500,000 visitors/day
• 5–20× traffic spikes
• complex product/inventory rules
• subscriptions
• multiple payment gateways
• ERP/CRM integrations
• real-time inventory
• large catalogs

then WooCommerce's MySQL database, PHP workers, object cache, Action Scheduler, and third-party plugins become much more important than raw server CPU.

That's why I wouldn't simply buy a gigantic VPS.

What I'd deploy

For a store at this level, I'd want roughly:

Cloudflare/CDN/WAF → load balancer → multiple PHP application nodes → Redis object cache → dedicated MySQL database → separate background/job workers → durable backups

And I'd specifically separate:

1. Web/checkout workers
2. WooCommerce Action Scheduler/background jobs
3. Database
4. Redis/object cache
5. Search, if the catalog is large
6. Media/CDN
7. Monitoring/logging

The database is particularly important. WooCommerce isn't just serving cached pages—checkout, carts, inventory, orders, customer accounts, payment callbacks, etc. are dynamic.

Kinsta is also worth considering

Kinsta's current WooCommerce platform uses isolated containers with automatically allocated resources and allows scaling resources for traffic spikes. It also provides application performance monitoring. kinsta.com

Kinsta WooCommerce Hosting

I'd put Kinsta high on the list if your priority is excellent managed WordPress operations with less infrastructure management.

One particularly interesting option

Nexcess' current WooCommerce platform is explicitly positioned for high transaction volume, with autoscaling, PCI-oriented infrastructure, and application-level expertise. www.nexcess.com

Nexcess WooCommerce Platform

What I would choose

If this were my $10M–$100M/year WooCommerce operation, I'd probably start with:

Liquid Web/Nexcess enterprise WooCommerce → dedicated/custom cluster → Cloudflare → Redis → dedicated/optimized MySQL → separate workers

rather than trying to assemble everything myself on AWS.

If you have a strong DevOps team already, I'd instead seriously consider AWS/GCP with a deliberately engineered WooCommerce cluster.

And I would not use ordinary shared hosting, a cheap VPS, or a basic single-server WooCommerce setup at this volume.

If you tell me roughly (1) monthly orders, (2) peak orders/minute, (3) number of SKUs, (4) average concurrent users, and (5) whether you use subscriptions/ERP/inventory integrations, I can give you a much more concrete architecture—including server sizing, database sizing, expected monthly hosting cost, and which provider I'd pick.

If you mean hundreds of thousands of completed WooCommerce orders/transactions per month, I would treat this as an enterprise WooCommerce architecture rather than ordinary “managed WordPress hosting.”

At that scale, WooCommerce itself is capable of handling it—the WooCommerce team specifically discusses horizontal scaling around 100k–200k orders per month/day, depending on the workload. developer.woocommerce.com

My shortlist

Why I'd lean Pressable

Pressable is particularly interesting for this use case because its current WooCommerce platform provides automatic scaling, geo-redundant high availability, edge caching, OPcache, query caching, and the ability to burst beyond 100 CPU cores on premium configurations. Its mission-critical plans start at 10 vCPUs and are designed for millions of visits/month. pressable.com

WooCommerce itself currently lists Pressable among its recommended hosts, and its 2026 hosting guidance specifically recommends Pressable for growing stores that need automatic vertical scaling, object caching, CDN capabilities, and support for traffic spikes. woocommerce.com

There is also a useful caveat: transaction volume is much more important than visitor volume. A store with 300k orders/month but relatively modest browsing traffic can actually be more demanding than a site with millions of cached page views because checkout, cart, inventory, payment processing, order creation, webhooks, and database writes can't simply be served from a CDN.

What I'd require architecturally

For 100k–500k+ orders/month, I'd want:

• Horizontally scalable PHP/application layer
• Dedicated/high-performance MySQL, with sufficient IOPS and memory
• Redis/object caching
• CDN/edge caching for catalog and static content
• Cart/checkout explicitly excluded from page caching
• Aggressive database/query optimization
• WooCommerce Action Scheduler monitored and properly sized
• Separate workers for asynchronous jobs where appropriate
• Automated backups with tested restoration
• Staging environment
• Monitoring/APM with alerts on PHP workers, DB CPU/IOPS, slow queries, queues, checkout latency, etc.
• Load testing using realistic checkout/order traffic, not just synthetic page views
• HA/failover appropriate to your RTO/RPO

WooCommerce's current server guidance calls for PHP 8.3+, MySQL 8+/MariaDB 10.6+, HTTPS, and at least 256 MB WordPress memory, but those are minimum requirements, not what I'd provision for hundreds of thousands of monthly orders. woocommerce.com

One important distinction

If by “hundreds of thousands of transactions” you mean 200,000 orders/month, that's about 6,700 orders/day, averaging only ~4.6 orders/minute.

That's quite different from:

200,000 orders/month + 50 million product-page visits/month + 5,000 simultaneous shoppers + massive Black Friday spikes.

The latter is where architecture becomes substantially more complicated.

If this were my store, I'd start with Pressable Premium/Enterprise and have them architect the database/application layer around the actual order and concurrency profile. If you're operating at truly enterprise scale or have stringent compliance/SLA requirements, I'd jump to WordPress VIP or a custom cloud architecture. WooCommerce itself identifies VIP as its enterprise-tier option for very large organizations. woocommerce.com

If you tell me orders/month, peak orders/minute, monthly visitors, number of SKUs, whether you use subscriptions, and your approximate budget, I can give you a much more concrete architecture and hosting recommendation.

If you mean hundreds of thousands of completed WooCommerce orders per month—not merely page visits—I would not put the store on ordinary shared hosting or a basic VPS.

My shortlist

WooCommerce itself says there isn't a practical transaction ceiling: it cites stores handling thousands of transactions per minute, provided the hosting, code and optimization are appropriate. woocommerce.com

What I'd choose

For 200k–500k orders/month, I'd seriously consider Kinsta's enterprise/custom WooCommerce infrastructure rather than trying to build the infrastructure yourself. Kinsta provides scalable containerized resources, dedicated-server options, edge caching, APM, 24/7 support and the ability to scale PHP resources. kinsta.com

But at this volume, the architecture matters more than the hosting brand.

I'd want approximately:

• Dedicated/isolated application resources
• MySQL database with substantial CPU/RAM and fast NVMe
• Redis/object caching
• CDN/WAF, such as Cloudflare
• Multiple PHP workers/adequate PHP memory
• WooCommerce HPOS enabled
• Persistent/background job infrastructure for WooCommerce Action Scheduler
• Automated backups with tested restores
• Staging environment
• Monitoring/APM
• Database monitoring and query optimization
• Load testing against checkout, cart, account and payment flows, not just homepage traffic
• A plan for traffic spikes and database failover

HPOS is particularly important at this scale. WooCommerce's dedicated order tables reduce database contention and provide indexes specifically designed for order queries; WooCommerce describes HPOS as improving both scalability and reliability. developer.woocommerce.com

And this isn't theoretical: WooCommerce's own large-store documentation discusses a test store containing 9 million orders during an HPOS migration. developer.woocommerce.com

One important distinction

If you actually mean hundreds of thousands of transactions/month, that's roughly:

• 100k/month → 3,333/day
• 250k/month → 8,333/day
• 500k/month → 16,667/day
• 1M/month → 33,333/day

That's substantial, but it's very different from hundreds of thousands of simultaneous visitors.

For example, 500k orders/month averages only ~0.19 orders/second. The challenge is handling bursts—Black Friday, promotions, email campaigns, etc.—and the database writes generated by checkout, inventory, payment processing, webhooks, subscriptions, plugins, analytics, and background jobs.

If this were my store

For ~250k–500k orders/month, I'd start with:

Cloudflare → Kinsta Enterprise/custom → isolated PHP application → Redis → dedicated high-performance MySQL → external object/file storage + redundant backups

If you're approaching 1M+ orders/month, or downtime costs substantial money, I'd move toward an AWS/GCP architecture with separate application and database tiers, potentially multiple application nodes and a carefully designed database strategy.

I would not simply buy a giant WordPress server and assume it will scale. WooCommerce specifically identifies traffic patterns, WooCommerce/plugin code, other system code, and server hardware as the major scaling factors. woocommerce.com

If you tell me roughly orders/month, peak orders/minute, number of SKUs, concurrent shoppers, whether you use subscriptions, and your monthly hosting budget, I can recommend a concrete architecture (including CPU/RAM/database sizing) rather than just a hosting company.

Yes. Hundreds of thousands of monthly WooCommerce transactions is enterprise territory, but WooCommerce itself can handle that scale if the infrastructure and application are designed correctly. WooCommerce says high-volume stores can handle tens of thousands of orders per day with appropriate infrastructure. woocommerce.com

For that workload, I’d shortlist these:

What I'd choose

For a business doing, say, 200k–500k orders/month, I'd seriously consider Kinsta's dedicated/enterprise infrastructure first. Kinsta isolates sites into dedicated containers, offers scalable resources, Cloudflare integration, and has custom dedicated configurations for busy WooCommerce stores. kinsta.com

Kinsta WooCommerce hosting

If the business is mission-critical and downtime is extremely expensive, I'd investigate WordPress VIP/WooCommerce Enterprise. WooCommerce itself lists WordPress VIP among its recommended hosts and describes it as enterprise-grade infrastructure serving billions of page views. woocommerce.com

WooCommerce Enterprise

But hosting alone isn't the answer

At this scale, I would want an architecture roughly like:

Cloudflare/CDN/WAF → load balancer → multiple PHP application servers → Redis → highly provisioned MySQL → object/file storage

And particularly:

• WooCommerce HPOS enabled — orders use dedicated tables designed for better ecommerce query performance. woocommerce.com
• Redis/object caching
• Multiple PHP workers/application nodes
• Proper database sizing and query monitoring
• CDN/edge caching for catalog/product pages
• No caching of cart, checkout, or account pages; WooCommerce specifically calls out these dynamic areas. developer.woocommerce.com
• Queue/background processing for emails, webhooks, inventory synchronization, ERP integrations, feeds, etc.
• Automated backups with tested restoration
• Staging environment
• Load testing against peak transactions/minute, not merely monthly traffic
• Monitoring for PHP worker saturation, slow MySQL queries, Redis, queues, and checkout latency

One important distinction: 200,000 transactions/month isn't particularly scary by itself. That's only about 6,700/day on average. The difficult scenario is something like 200,000/month with 20–50× traffic spikes, thousands of simultaneous shoppers, and a large number of orders being created concurrently.

If you tell me roughly monthly orders, peak orders/minute, number of SKUs, concurrent users, and whether you're doing ERP/inventory integrations, I can recommend a concrete architecture (including approximate CPU/RAM/database sizing and whether I'd use Kinsta, AWS, or VIP).

Yes. Hundreds of thousands of monthly WooCommerce transactions is enterprise territory, and I would not put that store on ordinary shared hosting or a basic VPS.

My shortlist would be:

1. My default recommendation: Nexcess

Nexcess WooCommerce hosting

For your stated volume, Nexcess would probably be my first call.

Their higher-end WooCommerce infrastructure supports autoscaling, additional PHP workers, object caching, CDN delivery, proactive monitoring and WooCommerce-specific management. Their current documentation specifically describes autoscaling for high-traffic events and lists up to 60 PHP workers for the Enterprise WooCommerce tier during scaling events. docs.nexcess.com

The important distinction is that you're not just buying "a faster server." You're getting an architecture designed around the characteristics of WooCommerce—PHP workers, database performance, object caching, checkout traffic, background jobs, etc.

Nexcess WooCommerce platform details

2. If downtime is extremely expensive: WordPress VIP

WordPress VIP

This is the option I'd investigate if we're talking about a large retailer where an outage costs tens or hundreds of thousands of dollars.

WooCommerce itself currently identifies WordPress VIP as its enterprise recommendation for the biggest stores, and says high-volume stores can process tens of thousands of transactions per day with appropriate infrastructure. woocommerce.com

VIP advertises a 99.99% uptime SLA, 24/7 global priority support and infrastructure designed to scale with traffic. wpvip.com

The downside is obvious: cost and complexity. I wouldn't pay for VIP merely because the store has a large order count.

3. AWS/GCP/Azure if you have a serious engineering team

For the absolute largest implementation, I'd consider a custom architecture rather than "hosting WooCommerce" in the conventional sense:

Cloudflare
    │
    ├── CDN / WAF / DDoS
    │
Load Balancer
    │
    ├── WooCommerce web nodes
    ├── WooCommerce checkout nodes
    └── background/queue workers
             │
        Redis / object cache
             │
      MySQL / Aurora
       ├── primary
       └── replicas/backups

That gives you the ability to independently scale web/PHP capacity, database capacity and background processing.

But don't build this architecture just because it sounds enterprise. Running WordPress/WooCommerce on AWS yourself transfers a lot of operational responsibility to your team.

What matters more than the monthly transaction number

I'd actually want these numbers before choosing the host:

• Orders/day
• Peak orders/minute
• Peak concurrent shoppers
• Peak checkout requests/second
• Number of products/variations
• Database size
• Number of WooCommerce plugins
• Whether inventory is synchronized with an ERP
• Payment gateway
• Geographic distribution of customers
• Largest traffic spike you experience
• Whether orders are mostly steady or concentrated into short launches/promotions

For example, 300,000 orders/month spread evenly is dramatically easier than 300,000 orders/month where 30% happen during a four-hour promotion.

And WooCommerce's current server requirements call for PHP 8.3+, MySQL 8.0+/MariaDB 10.6+, HTTPS and at least a 256 MB WordPress memory limit—but those are minimum requirements, not an architecture I'd use for your volume. woocommerce.com

One particularly important point

Don't optimize only for page views.

At this scale, the difficult traffic is:

cart → checkout → payment → order creation → inventory → emails/webhooks → ERP/fulfillment

Those requests often cannot simply be served from CDN/page cache. Your database, PHP workers, Redis/object cache and asynchronous jobs become much more important.

Kinsta, for example, provides server caching, edge caching, CDN and Redis capabilities, which makes it a reasonable alternative for high-traffic WooCommerce. kinsta.com

If this were my store: I'd start by getting an architecture/benchmark proposal from Nexcess, and simultaneously price WordPress VIP if the business considers uptime mission-critical. I would only choose a self-managed AWS architecture if there is already a competent DevOps/SRE team.

If you tell me roughly how many orders/day, peak orders/minute, number of products, and current hosting setup, I can size the architecture much more specifically—including the likely CPU/RAM/database/Redis requirements and which hosting tier I'd use.

If you mean hundreds of thousands of completed WooCommerce orders/transactions per month, I would not use ordinary shared hosting or a basic WordPress VPS. That volume is absolutely achievable with WooCommerce, but the architecture matters more than the raw server size. WooCommerce itself says scaling depends heavily on traffic patterns, plugins/theme code, and server infrastructure. woocommerce.comdocs.nexcess.comwoocommerce.com

My shortlist

WooCommerce itself currently recommends WordPress VIP for its "big store" tier, describing it as its enterprise platform and noting its ability to handle extremely large request volumes. woocommerce.com WooCommerce's own hosting page also lists WordPress VIP and Pressable among its recommended hosts. woocommerce.com

Nexcess is particularly interesting for your use case because it offers actual clustered hosting. Its documentation describes horizontal scaling across multiple servers for increased throughput and fault tolerance, and its enterprise offering supports custom-engineered WooCommerce clusters. docs.nexcess.com

Kinsta provides isolated containers, scalable resources, global CDN/edge caching, dedicated-server options, and 24/7 support. Its current WooCommerce offering specifically targets traffic spikes and resource-intensive stores. kinsta.com

The important part: don't size this by "transactions/month"

For example, 300,000 orders/month is only ~10,000 orders/day or ~0.12 orders/sec on average. The challenge is that the checkout workload isn't evenly distributed.

A store doing 300k orders/month could be easy if orders are spread throughout the day, or extremely demanding if you get:

• 1,000+ simultaneous shoppers
• large marketing campaigns
• flash sales
• thousands of concurrent checkout requests
• large product/inventory databases
• complex tax/shipping calculations
• ERP/WMS integrations
• subscriptions
• lots of plugins doing synchronous work

I'd therefore design around peak concurrent checkout/order writes, not the monthly transaction number.

Architecture I'd want

For that scale, I'd want something roughly like:

CDN/WAF → load balancer → multiple WooCommerce application nodes → Redis/object cache → dedicated/high-performance MySQL → queue/workers → external services

And specifically:

• WooCommerce HPOS enabled. HPOS puts orders into dedicated optimized tables/indexes rather than relying on the traditional WordPress post/meta tables. WooCommerce explicitly identifies scalability and reliability as major benefits. woocommerce.com
• Redis/object caching
• CDN + edge caching for catalog/product pages
• Aggressive but correct page caching, while keeping cart/checkout/account/order operations dynamic
• Dedicated database resources, rather than letting the database fight with PHP/web processes
• Multiple PHP workers/application nodes
• Queueing for emails, fulfillment, inventory synchronization, webhooks, ERP operations, reporting, etc.
• Automated backups with tested restores
• Staging environment
• APM and database query monitoring
• Load testing against checkout, not merely a homepage benchmark
• Redundancy/failover for the database and application layer

WooCommerce's current hosting guidance specifically calls out PHP workers, object caching, CDN, and automatic scaling as important considerations as stores grow. woocommerce.com

What I'd choose

If this were my store and the business genuinely depended on hundreds of thousands of monthly orders:

$ / complexity sensitive: Nexcess Enterprise WooCommerce
Want managed + relatively straightforward: Kinsta Enterprise WooCommerce
Mission-critical enterprise operation: WordPress VIP
Have a serious DevOps/platform team: AWS/GCP architecture built specifically for WooCommerce

I would not jump straight to AWS just because it's "more scalable." A badly architected WooCommerce installation on AWS can perform worse and be much harder to operate than a properly engineered managed platform.

If you tell me approximately orders/month, peak orders/minute, number of SKUs, concurrent users, annual revenue, and whether you need PCI/SOC 2, I can give you a much more concrete architecture and rough monthly hosting budget for 100k, 300k, and 1M orders/month.