An organization ' s efforts to maintain high levels of availability have significantly impacted its...

This question is about balancing two goals that often seem in tension in HVIT: high availability and high change velocity. Site reliability engineering (SRE) is specifically designed to balance innovation speed with reliability outcomes by using engineering practices, automation, error budgets, observability, and operational learning.

A is only a metric and not a full improvement approach. B is useful, but event automation alone does not provide the broader balancing mechanism between reliability and delivery speed. C can be valuable for resilience testing, but SRE is the more complete and operationally integrated answer for supporting both fast change and availability.

Therefore D is best because SRE directly addresses the need to sustain resilient services while enabling rapid and frequent change.

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