How is the execution of code inside a task block determined when using async/await in SwiftUI?

In SwiftUI, when using async/await inside a Task, the code executes asynchronously in a separate task that runs in parallel with the main thread.

For example:

Task {
    let data = await fetchData()
    // update UI or state after receiving data
}

Here, Task creates a new asynchronous task that executes the code inside the block. await suspends execution within this task until the asynchronous function completes, without blocking the main UI thread. This allows writing asynchronous code in a sequential and understandable manner, without slowing down the user interface.