One of the most important accomplishments to come out of the three generations of Xbox consoles has been the idea of a gamer profile, an online identity that is gamer-centric, customizable, and tied into both what the gamer owns digitally and what they've done gamingwise. This identity has grown to its largest point yet with the Xbox One, and now, thanks to a new update, all of that data is accessible at the Xbox website.
There's player reputation, uploaded clips, the avatar, friends, etc. This info though, is just part of what Microsoft has planned. By the fall this same profile space should be even more robust.