XML-RPC

A lightweight remote procedure call (RPC) protocol that uses JSON to encode requests and responses, enabling clients to invoke methods on remote servers over transports such as HTTP, WebSocket, or TCP.

The Hypertext Transfer Protocol (HTTP) is an application-layer communication protocol used to exchange requests and responses between clients and servers over a network, forming the foundation of web APIs, websites, and distributed applications.

An architectural style for designing networked applications using stateless HTTP requests and standard operations.

A high-performance remote procedure call (RPC) framework that uses Protocol Buffers for interface definition and data serialization, enabling efficient, strongly typed communication between distributed applications and services.

A markup language designed to store and transport structured data in a human-readable and machine-readable format.