1. A computer-implemented method comprising: receiving, at a computing device, an identifier associated with a user; communicating the identifier to a remote authenticator to authenticate the user, the identifier associated with multiple applications; if the user is authenticated by the remote authenticator, receiving content associated with at least one application of the multiple applications; presenting, on a display device of the computing device, a live-tile user interface containing multiple live tiles, two or more live tiles of the multiple live tiles corresponding to applications of the multiple applications associated with the identifier, each of the two or more live tiles within the live-tile user interface not occluding each other, the live-tile user interface capable of concurrently presenting content within the two or more live tiles in the live-tile user interface; and presenting, on the display device of the computing device, the content within a live tile associated with the at least one application, the presenting enabling, through the live-tile user interface, interaction with the content presented in the live tile.