REST API
REST API (Representational State Transfer Application Programming Interface) is an architectural style for designing networked applications that uses standard HTTP methods (GET, POST, PUT, DELETE) to interact with resources identified by URLs. It enables communication between different software systems over the internet by exchanging data in formats like JSON or XML, following stateless, client-server principles. REST APIs are widely used for web services, mobile applications, and microservices architectures due to their simplicity and scalability.
Developers should learn REST API design when building web services, mobile backends, or integrating third-party services, as it provides a standardized way to expose data and functionality over HTTP. It's essential for creating scalable, maintainable systems that can be consumed by various clients (web, mobile, IoT) and is commonly used in modern cloud-native and microservices applications. Understanding REST principles helps in designing APIs that are predictable, cacheable, and interoperable across different platforms.