System reliability refers to the ability of a system to perform its intended function consistently over time without failure. It is a critical aspect in various fields, including engineering, computing, and manufacturing, as it ensures that products and services meet quality standards and user expectations. High reliability often leads to increased customer satisfaction and reduced maintenance costs. To measure system reliability, engineers use metrics such as Mean Time Between Failures (MTBF) and Failure Rate. These metrics help identify potential weaknesses and improve the design and operation of systems. Ensuring reliability involves regular testing, maintenance, and updates to adapt to changing conditions and requirements.