Putting into service is the process of making something available for use. It involves taking an item, such as a machine or a piece of software, and ensuring that it is ready to be used by the public or a specific group of people. The term 'putting into service' is often used in the context of technology, but it can also refer to any other item that needs to be made available for use. The term 'USING' is a five-letter word that is often used to describe this process.