ITIL stresses the importance of continual service improvement (CSI) as a way to measure, monitor, and enhance the performance and quality of IT services and processes. This includes collecting and analyzing data, recognizing improvement opportunities, implementing improvement actions, and analyzing the results. The key activities and tools for improving configuration change and incident management with ITIL are service level management, service measurement and reporting, service review and audit, and a service improvement plan (SIP). Service level management involves defining, agreeing on, monitoring, and reporting on the service levels and targets for IT services based on SLAs and OLAs with the users. Service measurement and reporting entails collecting, processing, and presenting data on the performance of IT services using metrics, indicators, dashboards, and reports. Service review and audit evaluates the compliance of IT services with audits, assessments, reviews, and feedback. Lastly, a SIP is a formal document that outlines objectives, scope, approach, resources, roles, responsibilities, actions, milestones, and measures for implementing improvement initiatives for IT services.