Comprehensive and Detailed Explanation From Exact Extract:
SRE and DevOps share a common view of continuous monitoring—a holistic approach that enables rapid detection, diagnosis, and response across all parts of the system. The SRE Book states: “Monitoring must enable fast detection of anomalies, quick diagnosis, and effective incident response.” Continuous monitoring includes application metrics, infrastructure signals, logs, traces, service health, and user-experience telemetry.
Option B captures this accurately: a combination of tools and processes enabling rapid incident detection and response, especially for cloud services.
Option A is partially correct but too narrow (only end-user transactions).
Option C is generic and does not emphasize continuous or rapid detection.
Option D describes infrastructure monitoring only—not full DevOps/SRE continuous monitoring.
Thus, B is the correct answer.
[References:, Site Reliability Engineering, Chapter: “Monitoring Distributed Systems.”, The Site Reliability Workbook, Observability and Monitoring., ]
