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API Gateway HTTP API versus API Gateway WebSocket API

28 Sep 2022

Learn how API Gateway HTTP API differs from API Gateway WebSocket API.

API Gateway HTTP API API Gateway WebSocket API
Type

REST API

Websocket

HTTPS/TLS

Backends

✅ Lambda
✅ Public endpoint
✅ Private endpoint
⚠️ AWS Service APIs

✅ Lambda
✅ Public endpoint
✅ Private endpoint
✅ AWS Service APIs

Costs

💰

💰

Maturity

⭐️⭐️

⭐️⭐️⭐️⭐️

Authentication

✅ IAM
❌ API Key
✅ OpenID Connect
❌ SAML
❌ Social
✅ Custom

✅ IAM
❌ API Key
❌ OpenID Connect
❌ SAML
❌ Social
✅ Custom

Tenant-based Throttling

Request Validation

Req./Res. Transformation

Endpoints

✅ Public
❌ Private

✅ Public
❌ Private

WAF