Business continuity planning is not a one-time activity, but a dynamic and ongoing process that needs to be reviewed and updated regularly to reflect changes in the internal and external environment. The frequency of review may vary depending on the nature and size of the organization, but it is generally recommended to conduct a review at least annually or whenever significant changes occur that may affect the continuity of the organization’s functions and processes. Such changes may include organizational restructuring, new products or services, new technologies, new regulations, new threats or vulnerabilities, or lessons learned from incidents or exercises. Verified References: https://www.ready.gov/business-continuity-plan https://drii.org/resources/professionalpractices/EN