Does Swift async await require iOS 15?

Swift now supports asynchronous functions — a pattern commonly known as async/await. Discover how the new syntax can make your code easier to read and understand. Learn what happens when a function suspends, and find out how to adapt existing completion handlers to asynchronous functions.

Async-await in Swift allows for structured concurrency, which will improve the readability of complex asynchronous code . Completion closures are no longer needed, and calling into multiple asynchronous methods after each other is a lot more readable.9 Kas 2021

Apple released the beta version of Xcode 13.2. Besides the latest versions of the SDKs, it also brings backward compatibility for Swift’s new concurrency system. Until now, we could use async/await only with iOS 15 , macOS Monterey, watchOS 8, and tvOS 15.

Note: The purpose of async / await is to simplify the syntax necessary to consume promise-based APIs . The behavior of async / await is similar to combining generators and promises. Async functions always return a promise.