Multi-Region scenarios
Implementing our application in multiple AWS Regions will increase the cost of operation, partly because we isolate regions to maintain their autonomy. It should be a very thoughtful decision to pursue this path. That said, regions provide a strong isolation boundary and we take great pains to avoid correlated failures across regions. Using multiple regions will give you greater control over your recovery time in the event of a hard dependency failure on a regional AWS service. In this section, we’ll discuss various implementation patterns and their typical availability.
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