How to Build Your Own Amazon API Gateway

Make calls to Amazon EC2 services from APIs.

Route requests to IP-based services registered in AWS Cloud Map, such as ECS tasks.

Make calls to AWS Elastic Beanstalk services from APIs.

Start AWS Step Functions state machines from API Gateway.

Make calls to web services outside of AWS with publicly accessible HTTP endpoints.

Create API keys, set fine-grained access permissions on each API key, and distribute them to third-party developers. Define plans that set throttling and request quota limits for each individual API key.

Authorize access to APIs using AWS IAM, Amazon Cognito, OAuth tokens, OIDC, OAuth2, and Lambda authorizers for custom authorization requirements.

Authorize and verify API requests to AWS services using signature version 4 for REST APIs and WebSocket APIs.

Use AWS Lambda functions to verify and authorize bearer tokens such as JWT tokens or SAML assertions.

Create private APIs with no data transfer out charges. Includes pricing for AWS PrivateLink VPC endpoints.

Run multiple versions of the same API simultaneously, allowing quick iteration, testing, and release of new versions. Manage multiple release stages such as alpha, beta, and production.

Associate specific stages and versions of an API with custom domain names and manage them through API Gateway.

Manage multiple release stages for each API version, such as alpha, beta, and production. Each stage can be configured to interact with different backend endpoints.

Best choice for building APIs that only require API proxy functionality. Optimized for serverless workloads and HTTP backends with up to 71% cost savings and 60% latency reduction compared to REST APIs.

Create RESTful APIs optimized for serverless workloads and HTTP backends using HTTP APIs or REST APIs. HTTP APIs are up to 71% cheaper than REST APIs.

Build real-time two-way communication applications, such as chat apps and streaming dashboards. API Gateway maintains a persistent connection to handle message transfer between backend service and clients.

Log API execution errors to CloudWatch Logs to make debugging easier.

Set up custom alarms on API Gateway APIs using CloudWatch integration.

Monitor performance metrics and information on API calls, data latency, and error rates from the API Gateway dashboard integrated with Amazon CloudWatch.

Set up a cache with customizable keys and time-to-live in seconds for API data to avoid hitting backend services for each request. Optional data caching charged at an hourly rate.

Provide end users with the lowest possible latency for API requests and responses by taking advantage of global network of edge locations using Amazon CloudFront.

Enable response streaming for REST APIs to stream responses as they are generated, useful for chatbots and media delivery.

Create fully managed, AWS-native developer portals for APIs. Enables centralized discovery, documentation, and governance of REST APIs across AWS infrastructure.

Segment APIs into structured product offerings to serve different audience needs while maintaining branded portals, access controls, and compliance.

Built-in Cross-Origin Resource Sharing support for API requests.