<ul><li>SOAP (Simple Object Access Protocol) is a messaging protocol that allows programs running on different operating systems to communicate using HTTP and XML.</li><li>SOAP offers WS-Security for end-to-end security standards and uses WSDL to define services and ensure predictable integration.</li><li>SOAP includes built-in error handling, supports WS-ReliableMessaging, and can maintain state across operations, making it valuable for complex business processes.</li><li>Despite newer protocols like REST and GraphQL, SOAP remains important in enterprise environments where security, reliability, and formal contracts are essential.</li></ul>

Understanding SOAP: The Protocol Built for Enterprise Reliability

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