Which concept is used to indicate the functions that need to be continued throughout or restored as quickly as possible after a risk?

Mission-essential functions are the key activities and operations that an organization must perform to achieve its mission or business objectives. Identifying and prioritizing mission-essential functions is a critical aspect of business continuity planning, especially in the context of responding to risks and disruptions. The goal is to ensure that these essential functions can either continue during a disruption or be quickly restored to minimize the impact on the overall mission or business.