AWS for E-commerce Infrastructure: AWS e-commerce runs ECS/EKS plus Aurora PostgreSQL for catalog, ElastiCache Redis for sub-ms carts, CloudFront for global assets, OpenSearch for faceted search, and Lambda + SQS + EventBridge for order pipelines.
AWS powers the infrastructure behind the largest e-commerce operations worldwide, including Amazon itself. CloudFront handles traffic spikes during flash sales without degradation. Aurora scales to millions of product queries per second. ElastiCache (Redis) provides...
ZTABS builds e-commerce infrastructure with AWS — delivering production-grade solutions backed by 500+ projects and 10+ years of experience. AWS powers the infrastructure behind the largest e-commerce operations worldwide, including Amazon itself. CloudFront handles traffic spikes during flash sales without degradation. Get a free consultation →
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AWS is a proven choice for e-commerce infrastructure. Our team has delivered hundreds of e-commerce infrastructure projects with AWS, and the results speak for themselves.
AWS powers the infrastructure behind the largest e-commerce operations worldwide, including Amazon itself. CloudFront handles traffic spikes during flash sales without degradation. Aurora scales to millions of product queries per second. ElastiCache (Redis) provides sub-millisecond session and cart management. Lambda processes order events asynchronously. For e-commerce businesses that need 99.99% uptime during peak shopping periods, AWS provides the battle-tested infrastructure that handles Black Friday-level traffic.
Auto-scaling across compute, database, and CDN handles 100x traffic spikes during sales events. No downtime during the moments that generate the most revenue.
CloudFront serves product images, pages, and API responses from 400+ locations. Sub-100ms page loads worldwide improve conversion rates.
ElastiCache Redis provides sub-millisecond reads for cart data, sessions, and product cache. Shopping cart operations are instant.
Lambda functions process order events asynchronously — payment capture, inventory update, shipping label, confirmation email — without blocking the checkout flow.
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Schedule a CallEnable predictive scaling for anticipated traffic events (Black Friday, product launches). Reactive auto-scaling has a 2-5 minute lag. Predictive scaling pre-provisions capacity before the traffic arrives.
AWS has become the go-to choice for e-commerce infrastructure because it balances developer productivity with production performance. The ecosystem maturity means fewer custom solutions and faster time-to-market.
| Layer | Tool |
|---|---|
| Compute | ECS Fargate / EKS |
| Database | Aurora PostgreSQL |
| Cache | ElastiCache Redis |
| CDN | CloudFront + S3 |
| Search | OpenSearch |
| Events | Lambda + SQS + EventBridge |
An AWS e-commerce infrastructure uses ECS Fargate for the application tier with auto-scaling policies tied to request count and CPU utilization. Aurora PostgreSQL handles product catalog and order data with read replicas for search queries. ElastiCache Redis stores sessions, cart data, and frequently accessed product information in memory for sub-millisecond access.
S3 hosts product images with CloudFront CDN distribution — images serve from the nearest edge location. OpenSearch powers product search with faceted filtering, autocomplete, and relevance ranking. When an order is placed, SQS queues trigger Lambda functions for payment processing, inventory deduction, shipping label generation, and email confirmation.
EventBridge routes order events to analytics, fraud detection, and fulfillment systems. CloudWatch auto-scaling policies prepare infrastructure before planned sales events.
| Alternative | Best For | Cost Signal | Biggest Gotcha |
|---|---|---|---|
| AWS (ECS + Aurora + ElastiCache + CloudFront) | Custom commerce at mid/enterprise scale with flash-sale spikes | $1,500-$20,000+/mo depending on GMV | Complex bill; tag every resource by team/feature from day one or regret it at scale. |
| Shopify Plus | DTC brands wanting zero-ops commerce with plug-and-play apps | $2,300+/mo plus 0.15-0.30% per order | Limited backend extensibility; custom checkout and ERP flows are harder. |
| commercetools on GCP/AWS | Headless commerce for B2B and composable retailers | $5k-$50k+/mo enterprise subscriptions | You still own the frontend, search, and ops layers beneath it. |
| Vercel Commerce + Medusa on DigitalOcean | Smaller brands optimizing for simplicity and cost | $100-500/mo infra | Flash-sale resilience and global edge coverage trail AWS considerably. |
AWS commerce infrastructure for a mid-sized retailer ($5M-$20M GMV) typically runs $3k-$12k/mo compared to Shopify Plus at $2,300/mo + 0.15-0.30% of sales ($7.5k-$60k/mo in merchant fees). At $10M GMV on Shopify Plus you pay roughly $400k/yr in platform + transaction costs; AWS custom commerce delivering the same resilience runs $80k-$150k/yr infra plus roughly $150k/yr for a dedicated SRE. Break-even usually arrives between $15M-$25M annual GMV. Below that threshold Shopify wins on TCO; above it, owning the stack on AWS captures margin and unlocks catalog/search capabilities impossible inside SaaS constraints.
Default TTLs are hours long; use cache-control `s-maxage` + invalidation paths or stale-while-revalidate headers for price-sensitive pages.
LRU eviction on undersized Redis drops sessions under memory pressure; provision for 2x peak working set and monitor `evicted_keys` alarms.
Default replication via Lambda consumers can take minutes; emit domain events to EventBridge with sub-5s SLA and batch index updates on a rolling 30s window.
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