The issue is in three parts: 1. Did AMZN build an appropriate architecture? 2. Did AMZN properly represent that architecture in both documentation and sales e

The issue is in three parts: 1. Did AMZN build an appropriate architecture? 2. Did AMZN properly represent that architecture in both documentation and sales efforts? 3. What the heck is going on with AMZN? Let's say that they build an environment in which power is not fully redundant and tested at the rack level, but is fully redundant and tested across multiple availability zones. Did they then issue statements of reliability to their prospective and existing customers saying that a single availability zone does not have redundant power, and customers must duplicate functionality in at least 2 AZs to survive a SPOF?