What is dependability definition?

Dependability can be defined as the ability of a system or product to deliver consistent and trustworthy performance in a reliable and fault-tolerant manner. It is the quality of being reliable, trustworthy, and consistent in meeting requirements or expectations. Dependability is essential for products and systems that are critical, such as safety-critical systems, medical devices, and transportation systems. It encompasses several aspects, including availability, reliability, maintainability, safety, and security. Dependability is measured through metrics such as mean time between failures (MTBF), mean time to repair (MTTR), and availability. A dependable product or system ensures that users can depend on it to perform its intended function without any unexpected or undue interruptions, failures, or errors.