There have been series of outages at Google, Amazon, and Microsoft.
Amazon.com down briefly, following Microsoft, Google outages
There are plenty of vendors and consultants who will scare you that the cost of an outage is expensive. The cost of the amazon.com outage is covered by the media as $5 mil.
Realistically how much did Amazon.com lose? How many users just came back later? What is the revenue rate at the time of the outage. Only Amazon.com knows how much money it lost, and what were the overall impact to sales.
Did this outage cause users to lose faith in amazon.com for shopping?
Outages are a fact of life for those who deliver services over the web. Nothing is perfect. How fast your recover and how you handle the outage is many times more important than the short term revenue hit.
A mistake was made somewhere. Amazon is up and running again. It only affected North America.
The big companies can survive an outage.