^ITIL® Continual Service Improvement (CSI) focuses on the principles and techniques from the CSI phase of the ITIL lifecycle, but does not go into detail on specific processes.
CSI focuses on how organizations and individuals can strategically review the products and services they produce following the strategy, design, transition and operational phases of the IT service lifecycle, and provides guidance on how this process should be organized and executed.
It also provides guidance on the tools and technologies that can be used to support CSI activities, as well as how to assess risks and critical success factors.