Business Process Execution Language (BPEL, also known as WS-BPEL) has become the de facto standard for orchestrating services in SOA composite applications. It enables the automation of business processes, reduces the gap between business requirements and applications, and allows better alignment between business processes and the underlying IT architecture. BPEL is an open specification and one of the most important pieces of SOA.This book provides a fast-paced practical introduction to WS-BPEL, one of the centerpieces of SOA. It covers the most important features of BPEL 2.0 and provides several real-world examples to underline its concepts.