SOAP

SOAP (Simple Object Access Protocol) is an XML-based messaging protocol used for exchanging structured information in web services over networks, typically using HTTP or SMTP. It defines a standardized format for messages, including an envelope structure with headers and a body, to enable communication between applications across different platforms and languages. SOAP is often associated with Web Services Description Language (WSDL) for service definition and Universal Description, Discovery, and Integration (UDDI) for service discovery.

Also known as: Simple Object Access Protocol, SOAP Protocol, SOAP Web Services, XML Web Services, WS-SOAP

🧊Why learn SOAP?

Developers should learn SOAP when working with enterprise-level systems, legacy applications, or scenarios requiring strict security, reliability, and transactional support, such as in financial services or healthcare. It is particularly useful for integrating heterogeneous systems where standardized, platform-independent communication is critical, and when using WS-* standards for features like encryption and message routing. However, for modern web APIs, RESTful services are often preferred due to their simplicity and lightweight nature.

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Compare SOAP

SOAP vs Rest→SOAP vs Graphql→SOAP vs Grpc→

Learning Resources

W3C SOAP Specification

SOAP Tutorial on TutorialsPoint

SOAP vs REST: Understanding the Differences

SOAP Web Services in Java

Related Tools

Xml Wsdl Web Services Http Soapui

Alternatives to SOAP

Rest Graphql Grpc

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