WSO2 BPS supports both WS-BPEL 2.0 and BPEL4WS 1.1 standards. It also includes WSO2 BPS specific extensions to enhance the features provide by WS-BPEL.

Allows multiple levels of instance data cleanup which are accumulated during process instance lifetime.

XPath extensions, Iteratable ForEach, Flexible Assigns, XQuery 1.0 support and various other extensions to BPEL language.

Hot update BPEL processes and allows you to maintain multiple versions of processes