The async/await model does not create new threads. http://msdn.microsoft.com/en-us/library/vstudio/hh191443.aspx http://msdn.microsoft.com/en-us/library/vstudi

The async/await model does not create new threads. http://msdn.microsoft.com/en-us/library/vstudio/hh191443.aspx http://msdn.microsoft.com/en-us/library/vstudio/hh191443.asp... TPL(Task parallel library) does use additional threads, and that's a different programming model. The async/await model in C# is essentially from F#'s async workflows: http://msdn.microsoft.com/en-us/library/dd233250.aspx http://msdn.microsoft.com/en-us/library/dd233250.aspx