Pages are Xamarin Forms generic representation of Cross Mobil Application Screens. A Page occupies most or all of a screen and contains a single child.
On IOS, the Page is mapped to ViewController, on Android, it is mapped to somewhat like Activity and on Universal Windows Platform, it is mapped to Page. Pages can be of several types, viz. Master /Detail Page, navigational Page, Carousel Page, Tabbed Page, Template Page, etc.