Networking networking web protocols

What is HTTP?

Definition

HTTP (HyperText Transfer Protocol) is the application-layer protocol for transmitting hypermedia documents on the web. It defines request methods (GET, POST, PUT, DELETE), status codes (200, 404, 500), and headers for client-server communication.

Why It Matters

HTTP is the protocol of the web. Every web page, API call, and resource request uses HTTP. Understanding status codes, headers (Cache-Control, Content-Type, Authorization), and methods is essential for web development and debugging.

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Related Terms

HTTPS REST API HTTP Status Codes Content-Type Header
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