TL;DR Async/Await is a syntax sugar that allows writing asynchronous code in a synchronous manner. It's based on promises, which are used to handle asynchronous operations. When using async/await, execution pauses until a promise is resolved or rejected, then resumes once the promise is resolved. Promises have three states: pending, resolved, and rejected, with methods for handling their state, including then(), catch(), and finally(). Mastering Node.js Async/Await with Promise Handling: A Fullstack Developer's Guide As a fullstack developer, you're likely no stranger to the world of asynchronous programming in Node.js.