A REST API (Representational State Transfer) is a web service protocol that allows systems to communicate over HTTP using standard operations like GET, POST, PUT, and DELETE.
REST is one of the most commonly used architectures for building APIs. It’s simple, stateless, and language-agnostic — making it easy for front-end and back-end systems to interact.
Most modern web and mobile apps rely on REST APIs to fetch or send data. It’s favored for its predictability, ease of caching, and broad support across frameworks and tools. RESTful APIs are foundational to everything from e-commerce platforms to internal enterprise systems.
