The first thing to bear in mind when talking about asynchronous programming is what the market actually perceives as asynchronous programming (also because Microsoft tends to drive people in this direction with its frameworks) is the ability to keep the UI unlinked to the code behind the waiting time. A strong proof of such a direction is the obligation to use asynchronous programming for any Windows Phone and Windows Store application. Although this choice is understandable because it drives programmers to create apps as the market expects, it also misguides programmers regarding the concept of asynchronous programming theory.

In multi-threaded programming, we create multiple virtual processors (threads) able to execute our code for long-time operations and without the need to participate in the same job. This means that different threads may do different things. In multi-threading, any thread does its job while trying to avoid any resource sharing with other...