Availability Group - a logical grouping of systems, services, or resources designed to work together to provide continuous service — even when one or more components fail. (Redundancy and Failover)

BAU - Business As Usual

BCI - Business Continuity Institute

BCM - Business Continuity Management

BCMS - Business Continuity Management System

BCP - Business Continuity Plan

BIA - Business Impact Analysis

Business Continuity Exercise - Practicing the BCP - e.g. a DR Test

DR - Disaster Recovery

Failover - when something fails and immediately and automatically switches over to a redundant copy.

Failure Group - a set of resources that are likely to fail together due to shared dependencies (like shared power, network switch, or storage).

IMT - Incident Management Team

Incident - Something that happens to threaten BAU. Examples include: Power outages, Floods, Fires, IT Outages, Cyber-attacks, Pandemics etc.

Invocation - The act of declaring that the BCP needs to be put into effect

ISO 22301 - BCM Certification

IT DR Management - the on-going process of planning, developing, testing and implementing disaster recovery management procedures, processes and associated solutions. Where applicable, these processes and procedures ensure the regular testing of IT DR solutions and the provision of plans in the event of a DR invocation.

IT Service Continuity - See IT DR Management.

Redundancy - you should distribute redundant components across different failure groups

RPO - Recovery Point Objective

RTO - Recovery Time Objective

SPOF - Single Point Of Failure

Switchover - manual invocation of a failover (normally allowing for actions to eliminate data loss)

WAR - Work Area Recovery - where BAU activities will relocate during an incident. Sometimes referred to as the War Room.