JavaScript Async/Await Explained: Cleaner Code Built on Promises

JavaScript's async/await syntax, introduced in ES2017, was designed to make asynchronous code easier to read and maintain than chained Promise callbacks. The async keyword ensures a function always returns a Promise, while await pauses function execution until a Promise resolves, freeing the CPU to handle other tasks in the meantime. Together, they act as syntactic sugar over Promises, allowing developers to write asynchronous logic that resembles straightforward synchronous code. Error handling in async/await follows the familiar try/catch pattern, replacing the .catch() blocks used with traditional Promise chains. The approach is especially useful when multiple asynchronous operations depend on each other sequentially, avoiding deeply nested .then() callbacks.