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Amazon API Gateway is a fully managed service that makes it easy for developers to create, publish, maintain, and secure APIs at any scale.
- **Authentication:** Native support for Cognito, OAuth2, and Custom Authorizers (Lambda).
- **Throttling:** Protect your backend from surges by limiting requests per user.
- **Version Management:** Manage 'Stages' (Dev, Prod) and rollback versions instantly.
- **Transformation:** Use VTL (Velocity Template Language) to transform JSON payloads before they hit your .NET service.
REST APIs: Full-featured, supports everything (Usage plans, API keys, etc.).
HTTP APIs: Up to 70% cheaper and lower latency. Use these if you only need basic routing and authentication.
Q: "Should I use API Gateway or just an ALB?"
Architect Answer: "Use **ALB** if you have a high-volume, standard .NET API and you want to keep costs predictable. Use **API Gateway** if you are building a serverless ecosystem (Lambda), need advanced features like API Keys, or want to expose your API to external developers via a professional Developer Portal."
Quizzes linked to this course—pass to earn certificates.
On this page
1. Key Features 2. REST vs HTTP APIs 3. Architect Insight