The Information Technology Infrastructure Library, or ITIL, process stages include service strategy, design, transition, operation and continual service improvement. The process defines procedures and tasks used to provide best practices for IT service management.
The Service Strategy stage offers guidance on the design, development and implementation of IT service strategies. During this stage, organizations determine their target markets and ways to stay ahead of the competition. The management team assesses costs and risks associated with their service areas and use this information to make operational decisions.
The Service Design stage involves design coordination as well as risk, capacity, information security and supplier management operations. It entails designing service plans that address customer concerns in a proficient manner and making improvements to already existing plans. Service Transition focuses on building and deploying of IT services. This stage provides guidance on how to effectively transition new and changed service plans and operations without interrupting other processes and services.
The objective of the Service Operation stage is to ensure reliable and cost-effective delivery of services to customers through proper event, incident, access, and problem management procedures. The Continual Service Improvement stage aims at improving the efficiency and effectiveness of all IT services and processes through service reviews and process evaluation, as well as definition and monitoring of CSI initiatives.