From Halopedia, the Halo wiki
Axis Studios, formerly Axis Animation, is an award winning visual effects, animation and design studio. Founded in 2000, the company provides visual effects for video games, films, television, commercials and online entertainment.
Axis was selected by Microsoft to develop the cutscenes for Spartan Ops, the Halo Xbox One announcement trailer, and the Halo 5: Guardians CG cinematics. The studio also produced at least one cinematic for Halo Infinite's multiplayer seasons.