How does REST API differ from SOAP (XML API)?

REST API and SOAP (XML API) are different approaches to organizing interaction between client and server.

REST (Representational State Transfer):

• Uses standard HTTP methods (GET, POST, PUT, DELETE).
• Data transfer is usually in JSON format (though XML and others are also possible).
• Lightweight, easier to implement and use.
• Does not require complex protocols, operates over HTTP.
• Supports caching, scalability, and simplicity.

SOAP (Simple Object Access Protocol):

• Uses XML for message exchange.
• Has a strict protocol with a set of rules and standards (WS-*).
• Supports advanced features: security (WS-Security), transactions, reliable delivery.
• Requires complex configuration and processing.

In the end, REST is more flexible and widely used for web services where simplicity and speed are important. SOAP is suitable for enterprise systems with high security and reliability requirements.