Fragmentation is a very beautiful multiplayer map. My work as a skybox/vista artist is more about composing the big picture of the vista.
The floating islands were made by the amazing skybox artist Oliver Regueiro:
https://www.artstation.com/oliverregueiro
The skybox was initially made by matte painter Rob Go.
I created the moving cloud and the light ray in the sky, placing cloud and fog cards to add more depth and atmosphere.