What is a 'GameDay' exercise in SRE, and what are its primary objectives?
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A
A GameDay is a planned disaster simulation where the team intentionally induces failure scenarios in a production or production-like environment to test incident response, runbooks, and system resilience
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B
A GameDay is a quarterly team-building event where SREs compete to resolve mock incidents the fastest
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C
A GameDay is an unannounced audit where management tests whether the on-call team can respond to an incident correctly
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D
A GameDay is a post-mortem review session held after a major incident to replay events and identify improvements