https://www.youtube.com/watch?v=L2oJw1a_qEM
Project Natick
https://natick.research.microsoft.com/
Microsoft finds underwater datacenters are reliable, practical and use energy sustainably:
https://news.microsoft.com/innovation-stories/project-natick-underwater-datacenter/
They'd probably like to have data housed in international waters where laws of the land don't apply (data, legal jurisdiction)