In August 2014, the White House announced the creation of the US Digital Service, which promptly released the US Digital Services Playbook. This playbook, which spans the fields of customer experience, digital governance, application development and operations, and data analytics, provides federal CIOs a modern and reliable approach to improving federal digital services. In this report — the fourth in our series on the new federal playbook — we offer CIOs guidance for implementing and improving upon the four plays that broadly focus on DevOps.