The ITIL 4 Digital IT and Strategy (DITS) reference and revision guide is one of five ITIL 4 revision aids published by TSO, following on from ITIL 4 Foundation revision guide. It focuses on the alignment of digital business strategy with IT strategy. It also covers how disruption from new technologies is impacting organizations and how businesses are responding. Key topics include, using DITS in an organization, DITS and digital disruption, strategic approaches for digital organizations, implementing DITS and ITIL practices in DITS. This pocket guide is an aid for revision and preparation for taking the ITIL 4 Managing Professional: DITS certification, and post-certification it is a quick useful reference. It summarizes key topics for exam preparation, includes key figures from the core guidance, provides an examination overview, tips for taking the exam and a summary table linking learning outcomes to references in the text and to core guidance.