Understanding active-passive architectures
Active-passive architectures (or primary standby) are a common approach to achieving regional resiliency. In this model, one regional deployment serves as the primary or active region, handling all incoming traffic and requests. Simultaneously, a secondary or passive region remains on standby, ready to take over operations in the event of a regional failure or disaster. The primary advantage of an active-passive architecture is its simplicity and cost-effectiveness. Since only one region is actively serving traffic at any given time, the operational costs and resource utilization in the passive region are minimal. This makes it an attractive option for organizations with limited budgets or those seeking a basic level of regional resilience.
In the following figure, you can see an example of active-passive multi-region deployment. It is key here to leverage infrastructure as code (IaC) to replicate all the components of the infrastructure...
