Yes, the Xbox One has a proper wifi chip that is built into the system. This is the same kinda thing that PlayStation consoles have meaning there is no need to purchase any external addon in order to be able to connect to a wifi connection.
The Xbox One is a home game console from Microsoft that is the third console to be released in the Xbox family. The system has two variations, the Xbox One S and the X. The system was not backward compatable at launch but it is now possible to play games from the Xbox 360 and the original Xbox on this console.