# Region selection
<a name="region-selection"></a>


| CMSUS\_1: Are you selecting the Region to meet both your business requirements and sustainability goals?  | 
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**CMSUS\_BP1.1: Choose a Region based on both your business requirements and sustainability goals** 

Choose a Region to optimize your KPIs, including those related to performance, cost, and carbon footprint. For more details, see [SUS01-BP01](https://docs.aws.amazon.com/wellarchitected/latest/sustainability-pillar/sus_sus_region_a2.html) in the *Sustainability Pillar whitepaper*. 

**Prescriptive guidance:**
+  An edge device might be on the move and it should connect to the closest Region to meet cost, network latency, and sustainability requirements.  
+  As per business and regulatory requirements, configure the critical part of the workload as active/active. 
+  Avoid short lived connections from the edge to avoid connection overhead of establishing a new connection.