Promises

💬 In Plain Words: A Promise in JavaScript is simply an IOU for a value that hasn't arrived yet. When you call imperative Apex in LWC, Salesforce hands you this IOU. You can process it by chaining .then() and .catch() , or you can unwrap it elegantly using async and await inside a standard try/catch block. Both methods achieve the exact same thing, but await makes asynchronous code read like normal, top-to-bottom synchronous code.