Technology

REST APIs

REST (Representational State Transfer) is an architectural style for networked applications: it defines a stateless, client-server communication model using standard HTTP methods (GET, POST, PUT, DELETE) to manage resources identified by unique URIs.

REST APIs are the backbone of modern web services, enabling efficient, scalable communication between systems. The architecture mandates a uniform interface and stateless operations, meaning each request from a client to the server contains all necessary information, preventing server-side session overhead. This core design principle ensures high reliability and visibility, crucial for large-scale deployments like Amazon Web Services or the GitHub API. Resources are accessed via clean, predictable URLs (e.g., `/users/42`), and actions map directly to HTTP verbs: a `GET` retrieves data, a `POST` creates a new resource, and a `DELETE` removes one. Responses typically use JSON or XML formats, and standard HTTP status codes (like `200 OK` or `404 Not Found`) clearly signal the request outcome, simplifying client-side logic and error handling across diverse platforms.