Who is doing it: Companies that can't afford multiple data centers or that want to get into a new location quickly can turn to a service provider to store their data. Ethernet switch startup Arista Networks uses a service from Egnyte to back up PCs and share files internally, as well as with partners and customers. Each time Arista sets up a sales operation in a new country, its data is available at the end of any broadband connection. Cloud-based storage on U.S. soil can help companies get around certain countries' censorship rules, says analyst Andreas Antonopoulos of Nemertes Research. It may also support use of encryption technologies that are subject to export controls.