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What is the main purpose of employing metrics like MTBF in cloud performance monitoring?

  1. To ensure availability

  2. To measure system reliability

  3. To define access controls

  4. To assess user activity

The correct answer is: To measure system reliability

The primary purpose of utilizing metrics such as Mean Time Between Failures (MTBF) in cloud performance monitoring is to measure system reliability. MTBF is a key reliability metric that quantifies the average time duration between failures of a system. A higher MTBF indicates a more reliable system, as it suggests that the system can function for extended periods without experiencing issues. In the context of cloud services, evaluating MTBF allows organizations to understand how often and for how long their systems are unavailable due to failures. This information is crucial for maintaining high availability and ensuring service continuity, ultimately leading to improved customer satisfaction and trust in the service provider. While ensuring availability is also important, the focus of MTBF specifically relates to reliability. For access controls and assessing user activity, different metrics and measurements would be applicable that do not pertain to system reliability. Therefore, understanding the role of MTBF in the broader spectrum of cloud performance metrics is essential for effective monitoring and operational excellence.