The Amazon API Gateway service is a fully managed service that allows developers to easily construct, publish, maintain, monitor, and protect APIs of any size. APIs allow applications to access data, business logic, and functionality from your backend services through a “front door.” RESTful APIs and WebSocket APIs can be created with API Gateway to enable real-time two-way communication applications. Web applications, as well as containerized and serverless workloads, are supported by API Gateway.

API Gateway handles traffic management, CORS support, authorization and access control, throttling, monitoring, and API version management, as well as other responsibilities involved in accepting and processing hundreds of thousands of concurrent API calls. There are no minimum fees or initial costs with API Gateway. You pay for the API calls you receive and the data you send out, and you can save money by using the API Gateway’s tiered pricing model as your API usage grows.

API Types

RESTful APIs

Using HTTP APIs, create RESTful APIs that are suited for serverless workloads and HTTP backends. For APIs that merely require API proxy capability, HTTP APIs are the ideal choice. API Gateway also offers REST APIs if your APIs require API proxy capabilities and API management in a single package.

WEBSOCKET APIs

WebSocket APIs can be used to create real-time two-way communication applications like chat apps and streaming dashboards. API Gateway provides a persistent connection between your backend service and your clients to handle message transfer.

Benefits

Efficient API development

API Gateway allows you to run many versions of the same API at the same time, allowing you to swiftly iterate, test, and release new versions. There are no minimum fees or prior commitments; you only pay for API calls and data transfer out.

Easy monitoring

The API Gateway dashboard, which allows you to visually monitor calls to your services using Amazon CloudWatch, provides performance metrics and statistics on API calls, data latency, and error rates.

Performance at any scale

Utilize our global network of edge locations with Amazon CloudFront to provide end-users with the lowest possible latency for API requests and responses. To guarantee that backend operations withstand traffic surges and that backend system are not called needlessly, throttle traffic and approve API requests.

Flexible security controls

With AWS Identity and Access Management (IAM) and Amazon Cognito, you can control who has access to your APIs. API Gateway supports OIDC and OAuth2 natively if you utilize OAuth tokens. You can use AWS Lambda to run a Lambda authorizer to satisfy bespoke authorization requirements.

Cost savings at scale

For API requests, API Gateway offers a tiered price plan. With an API Requests price as low as $0.90 per million requests at the highest tier, you may save money as your API usage grows across all of your AWS accounts.

RESTful API options

Using HTTP APIs or REST APIs, create RESTful APIs. For the vast majority of use cases, HTTP APIs are the most cost-effective option, costing up to 71% less than REST APIs. REST APIs can be used if your use case necessitates API proxy capability as well as administration functions in a single solution.

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