No it isn’t. I’ve consulted for companies that try to rely on third parties, and their false promises of redundancy and reliability bite them every time.
Even those reliant on Amazon EC2 now simply accept that they must pay double or even triple the monthly rate to run copies of their virtual machines in 3 different Amazon data centers. Such a joke. thenextweb.com/insider/2013/09/18/is-the-cloud-ready-for-mission-critical-apps/