What is an API gateway? definition and role

An API gateway is a crucial server that acts as the single entry point for API requests between clients and backend services, streamlining the process by managing routing, authentication, rate limiting, request transformation, and response aggregation. By centralizing these functions, it simplifies client interactions that would otherwise involve multiple URLs and authentication methods. API gateways are essential for enterprises managing numerous APIs, as they ensure efficient request handling, protect backend services from overload, and facilitate API versioning without altering backend code. Popular gateways include cloud-native options like AWS API Gateway and open-source solutions such as Kong and Traefik, which cater to varying infrastructure needs. Embedded within automation platforms like CodeWords, API gateway functionality is integral to managing workflows, providing built-in authentication and routing for external API calls and requests from external systems, thus offering developers a streamlined and centralized approach to API management.

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