|1. Scenario is ....
2. A pre-defined set of Business Continuity events and conditions that describe, for planning purposes, an interruption, disruption, or loss related to some aspect(s) of an organisation's business operations to support conducting a BIA, developing a continuity strategy, and developing continuity and exercise plans.
(Source: Business Continuity Institute - BCI)
3. Pre-planned storyline that drives an exercise, the stimuli used to achieve exercise objectives.
(Source: ISO 22390:2011 - Societal Security - Guidelines for Exercises and Testing) - clause 3.23