API Design
API Design is the process of defining the structure, behavior, and interfaces of Application Programming Interfaces (APIs) to enable communication between software systems. It involves specifying endpoints, data formats, authentication methods, and error handling to create reliable, scalable, and developer-friendly APIs. Good API design ensures interoperability, maintainability, and ease of integration for clients.
Developers should learn API design when building web services, microservices, or any system that exposes functionality to other applications, as it directly impacts usability, performance, and security. It is crucial for creating RESTful APIs, GraphQL APIs, or gRPC services in scenarios like mobile app backends, third-party integrations, or internal service communication, helping reduce development time and errors through clear contracts.