<ul><li>Swift's suspension of a task involves one of the most elegant parts of the Swift Concurrency system.</li><li>Async functions in Swift are transformed into coroutines, which are essentially state machines that allow for efficient multitasking.</li><li>When an await function like Task.sleep is encountered, the current job captures necessary state, creates a continuation, and hands it off to the Swift concurrency runtime.</li><li>The thread is immediately released when a task is suspended, showcasing Swift's efficient cooperative multitasking capabilities.</li></ul>

Under the hood: What Really Happens When Swift Suspends a Task

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