A Continual Improvement is an ongoing effort to improve products, services, or processes.
Reference Definition by ISO: A Continual Improvement is a set of recurring activities that are carried out in order to enhance performance. Continual improvements can be achieved by carrying out audits, self-assessments, and management reviews. Continual improvements can also be realized by collecting data, analysing information, setting objectives, and implementing corrective and preventive actions.
Related Definitions in the Project: The Project Management
