Web Development

What is HTTP?

HyperText Transfer Protocol — the foundation protocol for data communication on the web.

Definition

HTTP (HyperText Transfer Protocol) is the application-layer protocol that powers the World Wide Web. It follows a request-response model where clients (browsers) send requests and servers return responses. HTTP/1.1 introduced persistent connections, HTTP/2 added multiplexing and header compression, and HTTP/3 uses QUIC (UDP-based) for faster connections. HTTPS adds TLS encryption for security.

Related Terms

REST API SSL/TLS DNS

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