A queue is a way to organize items or people in a line, where the first one to enter is the first one to leave. This system is often used in everyday situations, like waiting in line at a store or for a bus. In computer science, a queue is a data structure that follows the same principle, known as FIFO (First In, First Out). In a queue, you can add items to the back and remove them from the front. This makes it useful for tasks like managing print jobs or handling requests in a server. Overall, queues help keep things orderly and efficient in various settings, from public transportation to computer programming.