BBC:
https://www.bbc.com/news/business-68017347
India is a relatively cheap place to create such artwork and the adoption of cloud computing has made it easy for Indian workers to contribute to projects based overseas.
"India has become a big market for outsourcing though not the entire movie - but parts of movies," says Ketan Mehta, founder of Cosmos Maya, a visual effects and animation studio.
He says it's "only a matter of time" before Indian studios are handling all the visual effects for big global productions.