1. A computer-implemented method comprising: presenting, concurrently and in a multi-application immersive environment, a first immersive interface of a first application in a first region of the multi-application immersive environment and a second immersive interface of a second application in a second region of the multi-application immersive environment, the first region having a first predetermined region width, the first immersive interface presenting content in a preconfigured arrangement corresponding to the first predetermined region width; receiving selection to the multi-application immersive environment to alter a first size at which the first immersive interface is currently presented; responsive to the selection to alter the first size of the first immersive interface, altering both the first size of the first immersive interface and a second size at which the second immersive interface is currently presented, the altering automatically sizing the first immersive interface to fit a third region and automatically sizing the second immersive interface to fit a fourth region; and presenting, concurrently in the multi-application immersive environment, the first immersive interface in the third region and the second immersive interface in the fourth region, the first immersive interface presenting content in a second arrangement corresponding to a size of the third region, the second arrangement different from the first arrangement, the display of the third region and the fourth region in the multi-application immersive environment replacing the display of first region and the second region.