The purpose of the continual improvement practice is to align the organization's practices and services with changing business needs through the ongoing identification and improvement of services, service components, practices, or any element involved in the efficient and effective management of products and services1. This practice needs the right culture to be embedded across the entire organization, as it requires a shared vision, commitment, empowerment, collaboration, learning, and measurement2. Reference: ITIL Foundation - ITIL 4 Edition, page 15; ITIL 4 - A Pocket Guide, page 34; ITIL 4 Practice Guide: Continual Improvement, page 7.

Reference: https://www.knowledgehut.com/tutorials/itil4-tutorial/itil-management-practices-processes