What is the difference between SOAP and REST?

REST is an architectural style based on the HTTP protocol, operating on resources (URI) using standard methods (GET, POST, PUT, DELETE). It supports various data formats (JSON, XML, and others). It is more flexible and lightweight.

SOAP is a protocol based on XML, using messages for procedure calls. It works with various transport protocols (HTTP, SMTP, TCP, and others). It has strict specifications and standards (WS-*, WSDL). It is more complex, designed for enterprise use and systems requiring high reliability and security.