Mean Time To Failure (MTTF) is a measure used to estimate the average time a device or system operates before it fails. It is commonly applied in fields like engineering and IT to assess the reliability of products. A higher MTTF indicates a more reliable product, while a lower MTTF suggests a higher likelihood of failure. MTTF is particularly useful for non-repairable systems, such as hard drives or electronic components. By analyzing MTTF, manufacturers can improve design and quality control, ultimately leading to better performance and customer satisfaction. Understanding MTTF helps businesses make informed decisions about product lifespan and maintenance needs.