# Workload architecture
<a name="workload-architecture"></a>


| DRHCREL03: What strategies should you implement to provide reliable data access and processing across on-premises, edge, and cloud environments? | 
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 If a resource failure occurs, healthy resources should continue to serve requests. When you have effective failover strategies, your systems in place can fail over to healthy resources in unimpaired locations. The failover must be implemented in accordance with your data residency requirements across on-premises, edge, and cloud environments. 

**Topics**
+ [DRHCREL03-BP01 Use AWS Outposts or Local Zones for scenarios where data must reside within a country or jurisdiction without a local AWS Region](drhcrel03-bp01.md)
+ [DRHCREL03-BP02 Implement failover mechanisms to maintain highly-available data access and processing across on-premises, edge, and cloud environments](drhcrel03-bp02.md)