.NET has always had a relatively easy asynchronous model. The async/await keywords made it a whole lot easier but BeginXXX/EndXXX were not that bad, although if

.NET has always had a relatively easy asynchronous model. The async/await keywords made it a whole lot easier but BeginXXX/EndXXX were not that bad, although if you are truly IO bound burning a few extra CPU cycles is not that important.