An IT manager is putting together a documented plan describing how the organization will keep...

The IT manager is creating a Business Continuity Plan (BCP). A BCP describes how an organization will continue to operate during and after a disaster or global incident. It ensures that critical business functions remain operational despite adverse conditions, with a focus on minimizing downtime and maintaining essential services.

Physical security relates to protecting physical assets.

Change management ensures changes in IT systems are introduced smoothly, without disrupting operations.

Disaster recovery is a subset of business continuity but focuses specifically on recovering from IT-related incidents​​.