Apache APISIX and AWS API Gateway solve the same problem from opposite directions. APISIX is a self-hosted, open-source gateway you run on any infrastructure, while AWS API Gateway is a fully managed, serverless service tightly integrated with the AWS ecosystem. The choice comes down to control and cost versus managed convenience and lock-in.
Overview#
AWS API Gateway is a managed service that handles API traffic without any servers for you to operate. It offers REST APIs, lower-cost HTTP APIs, and WebSocket APIs, and integrates natively with AWS Lambda, IAM, Cognito, CloudWatch, and WAF. You configure it through the AWS console, CloudFormation, or Terraform, and AWS operates and scales the underlying infrastructure.
Apache APISIX is a top-level Apache Software Foundation project: a high-performance gateway built on NGINX and LuaJIT, with configuration stored in etcd and pushed to all nodes in real time. You deploy and operate it yourself, on any cloud, on-premises, or in Kubernetes, with no per-request platform fees.
Architecture Comparison#
Apache APISIX Architecture#
APISIX runs as a self-hosted data plane with a built-in control plane: an Admin API, etcd-backed configuration, an optional dashboard, and a 100+ plugin ecosystem. Because configuration lives in etcd and propagates instantly, routes and policies change without restarts. You own the full request path, which means you can deploy APISIX next to your services in any environment and tune it to your hardware.
AWS API Gateway Architecture#
AWS API Gateway is serverless. There is no instance to size, patch, or scale, and high availability is handled by AWS within a region. Backends are typically Lambda functions, HTTP endpoints, or other AWS services, wired through integrations. The tradeoff is that the data plane is a black box: you configure behavior through AWS abstractions (stages, resources, authorizers, mapping templates) rather than operating the proxy directly, and behavior is bounded by AWS service limits.
Pricing and Cost at Scale#
The pricing models are fundamentally different, and this is often the deciding factor.
AWS API Gateway charges per request, plus data transfer and optional caching. This is attractive at low volume because you pay nothing when idle, but cost grows linearly with traffic. At high, sustained request volumes the per-request fee can dominate the total cost of an API platform.
Apache APISIX has no per-request fee. The cost is the compute you run it on, which is largely fixed regardless of how many requests flow through. A single modest node handles very high throughput, so cost per request falls as traffic grows.
A useful rule of thumb: managed per-request pricing favors low or unpredictable traffic, while self-hosting favors sustained high volume where fixed infrastructure cost is amortized across many requests.
Performance and Limits#
AWS API Gateway is designed for elasticity rather than minimal latency, and it enforces hard service limits such as integration timeouts and per-region request quotas (some of which are soft limits you can request increases for). These rarely matter for typical workloads but can constrain long-running, high-throughput, or large-payload APIs.
APISIX is optimized for low, predictable per-request overhead using NGINX's event-driven model and radix-tree route matching. Running it close to your backends removes extra network hops. Because you control the deployment, you can benchmark and tune for your own latency and throughput targets rather than working within a managed service's quotas.
Feature Comparison#
| Feature | Apache APISIX | AWS API Gateway |
|---|---|---|
| Deployment model | Self-hosted (any cloud, on-prem, hybrid, Kubernetes) | Fully managed, AWS-only |
| Pricing | Free + infrastructure cost | Per request + data transfer |
| Configuration | etcd, real-time, fully dynamic | AWS console / CloudFormation / Terraform |
| Extensibility | 100+ plugins, multi-language (Go, Java, Python, Wasm, Lua) | Lambda authorizers, VTL mapping templates |
| Protocol support | HTTP/1.1, HTTP/2, HTTP/3, gRPC, WebSocket, TCP/UDP, MQTT, Dubbo | REST, HTTP, WebSocket |
| AI gateway capabilities | ai-proxy plugin, multi-LLM routing | Via Lambda / Bedrock integrations |
| Auth | Key, JWT, OAuth 2.0, OIDC, LDAP, mTLS | IAM, Cognito, Lambda authorizers |
| Observability | Prometheus, OpenTelemetry, Datadog, SkyWalking, Zipkin | CloudWatch, X-Ray |
| Portability | Runs anywhere, no lock-in | Coupled to AWS |
Vendor Lock-in and Portability#
The strongest argument for a self-hosted gateway is portability. AWS API Gateway configuration, authorizers, and VTL templates are specific to AWS; moving to another cloud or on-premises means rebuilding the gateway layer. APISIX configuration is portable: the same routes, plugins, and upstreams run identically on any cloud, in your own data center, or across a hybrid deployment. For organizations pursuing multi-cloud strategies, data-residency requirements, or simply avoiding lock-in, this portability is decisive.
When to Choose Apache APISIX#
- Sustained high traffic where per-request pricing would dominate cost.
- Multi-cloud, hybrid, or on-premises deployments and data-residency requirements.
- Full control over the data plane, custom plugins, and the latency floor.
- Rich gateway features (advanced traffic management, multi-protocol, AI proxy) without a managed service's constraints.
- Avoiding vendor lock-in with a portable, open-source configuration.
When to Choose AWS API Gateway#
- All-in on AWS with Lambda or other AWS services as backends.
- Low or spiky traffic where paying per request beats running infrastructure.
- No operational appetite for running and scaling a gateway yourself.
- Tight AWS-native integration with IAM, Cognito, and CloudWatch as a priority.
FAQ#
Is Apache APISIX cheaper than AWS API Gateway?#
It depends on traffic volume. AWS API Gateway charges per request plus data transfer, so cost scales linearly with traffic and becomes significant at high volumes. Apache APISIX is free and open source; you pay only for the compute you run it on, which is a largely fixed cost regardless of request count. For low or spiky traffic, the managed convenience of AWS API Gateway often outweighs its per-request cost. For sustained high-volume APIs, self-hosting APISIX is typically far cheaper per request.
Can I run Apache APISIX on AWS?#
Yes. APISIX runs anywhere you can run a container or a Linux host, including EC2, EKS, and ECS. Many teams run APISIX on AWS to keep traffic inside their VPC while avoiding per-request gateway fees and retaining the ability to move to another cloud or on-premises later without rewriting their gateway configuration.
How do I migrate from AWS API Gateway to Apache APISIX?#
The common approach is to stand up APISIX behind the same DNS or load balancer and shift routes incrementally. Map each API Gateway stage and resource to an APISIX route and upstream, translate authorizers to APISIX authentication plugins, and replace VTL mapping templates with request and response transformation plugins. Shifting traffic route by route with health checks allows a zero-downtime migration.
Does AWS API Gateway or Apache APISIX add more latency?#
A self-hosted APISIX deployment running close to your backends typically adds sub-millisecond proxy overhead and avoids extra network hops. AWS API Gateway is a managed regional service, so requests traverse AWS infrastructure and are subject to service limits such as integration timeouts. For latency-sensitive workloads where you control the network path, a self-hosted gateway gives you more control over the latency floor.