What is the difference between SOAP 1.1 and SOAP 1.2?

Some differences:

SOAP 1.1 is based on XML 1.0 while SOAP 1.2 on XML Information Set (Infoset XML) . The XML (infoset) information set provides a way to describe the XML document with schema XSD . This way of describing the XML document helps reveal other "serialization" formats, such as a binary format protocol.

SOAP 1.2 provides the ability to officially define transport protocols except using HTTP , while the provider conforms to the connection structure that is defined in SOAP 1.2. SOAP 1.2 /strong>. While HTTP is ubiquitous, it is not as reliable as other transports, including TCP/IP and MQ . SOAP 1.2 provides a more specific definition of the SOAP processing model that removes many of the ambiguities that can lead to interoperability errors in the absence of the Web Services-Interoperability (WS-I) strong>. The big differences are practically greater and significant in SOAP 1.2 , an evolution in the form of consuming and providing.

    

The SOAP 1.2 release can do everything SOAP 1.1 does, and much more.

SOAP 1.2 cleaner, has better Web integration, more versatile and faster:

Cleaner : clear processing and extensibility models, greater interoperability.

Better Web integration : better integration with XML standards and Web architecture.

More versatile : Provides protocol independence by providing a binding framework.

Faster : XML-based Infoset enabling performance optimization.

Here you will have the most detailed information .