The importance of building cloud services to resist failure was demonstrated on Sunday when Amazon Web Services (AWS) suffered major disruption.
Some of the internet's biggest sites and apps were intermittently unavailable after more than 20 services on the AWS platform began failing.
One AWS customer that managed to avoid any "significant impact" from the outages, according to a spokesman, was the video streaming site Netflix. Helping the service to weather the service disruption was Netflix' practice of what it calls "chaos engineering" software that deliberately attempts to wreak havoc on its systems.
In this instance, Netflix was able to rapidly redirect traffic from the impacted AWS region to datacenters in an unaffected area.