To write asynchronous functions in Swift, you use the `async` keyword. If a function might throw an error, you add the `throws` keyword after `async`. A function using `async throws` must either return a value or throw an error. This new syntax helps manage asynchronous operations, which is critical for modern app development to prevent UI freezes.

Context is key here. The `await` keyword pauses execution until the asynchronous function completes. Developers often encounter issues when forgetting to invoke closures, leading to errors. To call an async method from a synchronous context, you need to use `Task`, which creates an asynchronous context. Without it, you'll get a concurrency-related compiler error.

The core keywords are `async`, `await`, and `throws`. `async` marks a function as asynchronous, `await` pauses execution until the function finishes, and `throws` propagates errors. This streamlined approach makes asynchronous code cleaner and easier to read. It's a fundamental shift in how Swift handles concurrency, improving code clarity and maintainability.

Looking ahead, developers will need to master this syntax to build responsive and efficient applications. Understanding these concepts will be essential as Swift continues to evolve. The goal is to make it easier to write code that avoids blocking the main thread, leading to a better user experience on iOS and macOS devices.