Amazon has a cloud for U.S. classified data.
The physical and computer requirements for handling classified information are considerable, both in terms of technology and procedure. I am surprised that a company with no experience dealing with classified data was able to do it.
*** This is a Security Bloggers Network syndicated blog from Schneier on Security authored by Bruce Schneier. Read the original post at: https://www.schneier.com/blog/archives/2017/11/amazon_creates_.html