Business Process Execution Language (BPEL) Question:

BPEL supports two different types of business processes:
★ Executable processesallow us to specify the exact details of business processes. They can be executed by an orchestration engine. In most cases BPEL is used for executable processes.
★ Abstract business protocols allow us to specify the public message exchange between parties only. They do not include the internal details of process flows and are not executable.