Asynchronous programming has had a lot of attention in the last couple of years and there are two key reasons for this: First it helps in providing a better user experience by not blocking the UI thread which avoids the hanging of the UI screen until the processing is done and second, it helps in scaling up the system drastically without adding any extra hardware.

But writing asynchronous code and managing the thread gracefully was a tedious task. But as the benefits are tremendous.. Read complete post on Infragistics blog