Edge is the default browser on the Microsoft platforms (Windows and Xbox One) and adds a lot of features which were lacking in Internet Explorer. Microsoft's Edge browser was released in 2015 and is their replacement for their now obsolete web browser Internet Explorer. Please note that with Microsoft ending the development of Windows 10 Mobile, Edge will no longer be developed or supported on Windows 10 Mobile. If you're running the Edge browser, you should make sure you're using the latest version. There are a few different versions of Microsoft's Edge Browser.