The scenario points directly to observability, event detection, diagnosis, and automated operational response. These are core capabilities of monitoring and event management. This practice helps collect, analyze, correlate, and act upon information about services and infrastructure conditions.

Software development and management is broader and focused on development lifecycle activities. Service continuity management deals with major disruption preparedness and recovery. Infrastructure and platform management supports the technical environment, but it is not the best fit for detecting issues and triggering responses.

A is therefore the best answer because it most directly supports SRE-style resilience through telemetry and operational automation.

The ITIL 4 practice-guide manual also emphasizes automation and tooling as important enablers of practice effectiveness .

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