The document summarizes the SOA Practitioners' Guide, which was created collaboratively by expert SOA practitioners. The guide serves as a collective body of knowledge on SOA best practices and provides recommendations on how to plan and execute an SOA initiative through establishing principles, developing a roadmap and reference architecture, and implementing a three-phase maturity model. It describes the key stages of capturing requirements, designing applications, and deploying services, as well as cross-cutting concerns of governance, portfolio management, and the overall services lifecycle.