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Velo is a full-stack development platform that empowers you to rapidly build, manage and deploy professional web apps. In Velo, you will often encounter asynchronous code when you call a function that cannot finish executing immediately and therefore returns a Promise. A Promise represents a value that is not necessarily known when the Promise is created because it depends on asynchronous communication. We discuss different ways to call such functions and wait for them to finish executing. There are two main ways to work with Promises that are returned from a function.