SOAP Syncler-Glossar

SOAP, a central network protocol on the internet, plays a vital role in the communication between different systems. It enables a device to efficiently use the services of a server, as seen in search engines or online shopping.

What is SOAP?

SOAP (originally standing for "Simple Object Access Protocol") is an interface for web services. It governs how requests from a client, such as an internet browser, are made and processed by server services. SOAP provides a structure in which specific data and functions of the application can be integrated.

SOAP Web Services

SOAP is used when regulated and restricted access from one system to another is needed. It allows very different systems to cooperate by providing a framework into which the specific application can be integrated. Large platforms like Amazon and eBay partially utilize SOAP.

Structure and Functioning of SOAP

SOAP uses the XML Information Set and is mostly used in combination with HTTP. The structure of a SOAP message consists of a header that contains metadata, and a body that contains the actual data. SOAP often works with the Web Services Description Language (WSDL), enabling a client to understand the services of a web service and to make appropriate requests.


While REST has become widespread and is considered simpler and faster, SOAP offers advantages in terms of security with its embedded WS-Security and better error handling. The choice between SOAP and REST depends on the specific requirements and context of the application.