Single point of failure in the cloud can be due only to software errors. At some level. When your "stack" and deployment process involves multiple tools and se

Single point of failure in the cloud can be due only to software errors. At some level. When your "stack" and deployment process involves multiple tools and services, then yes you need high availability. Simple things with careful design and implementation tend to break less often. Use tested software bits, test your own bits and the odds of a failure drop quickly.