The sheer volume of virtual effects and the time needed to render them necessitated that Gaeta delegate a portion of the workload to additional VFX vendors, who created specific shots under his supervision. Those vendors include: BUF, creators of the Code sequences and other special perception effects; Tippett Studios, creators of some fully-digital environments and complex creature scenes; Sony Imageworks, creators of the Tunnel environments and large-scale events depicted within; and Giant Killer Robots, creators of the Underground environments.
To manage the intricate processes of creating virtual cinema from pre-visualization through post-production, Gaetas team collaborated to design the "Zion Mainframe," the most functional information and asset exchange engine ever created for a feature film. More then just a search engine, this new tool interlocks all departments involved in digitizing artwork, design concepts, storyboards, CAD stage plans, 3D models for concept and stage planning, high-resolution models, Quicktime movies of all shots in progress (which can be retrieved through a digital dailies and shot history system) as well as full resolution back-ups of final shots created by visual effects vendors.
To date, over 1000 special photographic, physical and pyrotechnic effects and digital artists have worked on the virtual effects elements of The Matrix Reloaded and The Matrix Revolutions.