Use async/await in real scenarios with sequential versus parallel work, layered error handling, UI states and readable asynchronous architecture.
The event loop keeps moving. Your local async flow simply resumes later.
`await` suspends the current async function until the promise settles, but the runtime can still process other queued work.
Thinking in explicit phases such as input, wait and output helps you avoid side effects and fragile hidden dependencies.
`await` alone is not enough. You still need success, failure and cleanup contracts.
In real interfaces, an async function often enables loading, runs a request, handles failure and always disables loading again in `finally()`.
That pattern keeps the UI usable even when the request fails, times out or returns something unexpected.
If two tasks are independent, waiting for them one by one wastes time.
Two consecutive `await` calls run in series. That is correct only when the second step depends on the first result.
If the tasks are independent, `Promise.all()` reduces the total waiting time and makes that intent explicit.