Deployment is like launching a ship into the water so it can sail. In the world of websites and applications, it's the process of making a website or app available for everyone to use on the internet. Think of it as the grand opening of a store or the first day a new amusement park ride is open to the public. It involves setting up all the necessary infrastructure and configurations so that the website or app can be accessed by users worldwide. Deployment ensures that all the hard work put into creating the website or app is finally ready for people to visit and use. It's like releasing a new book to the world, making it available for everyone to read and enjoy.