Https Aka Ms Activatexbox -

When you turn on a brand new or factory-reset Xbox, the on-screen setup wizard will ask you to sign in with your Microsoft account. At one step, a QR code may appear on your TV screen. Scanning that QR code with your smartphone takes you directly to https://aka.ms/activatexbox to complete the sign-in and activation process.

This link is typically used for one of two purposes: https aka ms activatexbox