What is an API gateway and what does it do?
An API gateway acts as a single entry point for managing requests between clients and multiple backend services. It is responsible for routing requests, aggregating responses, and enhancing the security of APIs. By acting as an intermediary, the API gateway simplifies the client experience, allowing developers to focus on building services without needing to handle numerous direct connections. Additionally, it can implement authentication, monitor traffic, and enforce rate limiting to protect services from overload. Overall, an API gateway enhances performance and provides a unified interface for diverse systems.