Introduction

It is not a matter of if but when will a given cloud provider experience a news-worthy regional disruption. It is inevitable. In my experience, this happens approximately every two years or so. When such an event does occur, many systems have no recourse and become unavailable during the disruption because they are only designed to work across multiple availability zones within a single region. Meanwhile, other systems barely experience a blip in availability because they have been designed to run across multiple regions. The bottom line is that truly cloud-native systems capitalize on regional bulkheads and run in multiple regions. Fortunately, we leverage fully managed, value-added cloud services that already run across availability zones. This empowers teams to refocus that effort on creating an active-active, multi-regional system. The recipes in this chapter...