To be more precise, XNA Framework is a pack that installs a set of libraries that are shared on systems like Xbox 360, the Zune player and Windows Phone. Managing a certain degree of integration between each of them and making it easier to create games and multimedia applications.
And of course, the libraries are essential at a technical level. Once installed, they provide access to graphic, sound and network connection elements that are vital for any developer. Thus, having this pack will give us access both to commercial games and “indie games” that are having a really good acceptance lately.