Z/OS is an operating system developed by IBM for mainframe computers. It is designed to handle large volumes of data and support multiple users and applications simultaneously. Known for its reliability, security, and scalability, Z/OS is widely used in industries such as finance, healthcare, and government. One of the key features of Z/OS is its ability to run both traditional mainframe applications and modern cloud services. It supports various programming languages and tools, making it versatile for developers. Additionally, Z/OS includes advanced features for data management and transaction processing, ensuring efficient operations in critical environments.