Asynchronous Programming

The document discusses asynchronous programming with C# async and await keywords. It covers how async methods are non-blocking and return control to the caller immediately. The anatomy of async methods requires the method be marked async and calls within can be awaited. Async methods can return void, Task or Task<T> depending on needs. The document demonstrates how to handle exceptions, cancellations, report progress, and await methods sequentially or in parallel using Task.WhenAll/WhenAny.