How Facebook Moved 20 Billion Instagram Photos 2014

This spring, even as some 200 million people were using Instagram on their smartphones, a small team of engineers moved the photo sharing service from Amazon’s cloud computing service—where it was built in 2010—into a data center operated by Facebook, which bought Instagram in 2012.

“The users are still in the same car they were in at the beginning of the journey,” says Instagram founder Mike Krieger, “but we’ve swapped out every single part without them noticing