The first public cloud services went live in the late 1990s using a legacy construct called a multi-tenant architecture, and while features and capabilities have evolved, many cloud services are still based on this 20th century architecture. That raises serious questions about how legacy clouds prepare for calamity.
While all architectures are susceptible to hardware failures and other issues that cause outages, the clouds that use a multi-instance architecture can better minimize the impact of an outage.
