Cloud computing does not eliminate the need for disaster recovery planning; it changes how DR is implemented. While cloud providers maintain highly available infrastructure, the shared responsibility model means that data protection, application recovery, and business continuity planning remain the customer's responsibility.
Multi-Region DR Architecture
Deploy your application across multiple geographic regions to protect against regional outages. Use DNS-based failover to redirect traffic to a secondary region when the primary becomes unavailable. The recovery time objective (RTO) and recovery point objective (RPO) for your application determine whether you need a hot standby, warm standby, or cold recovery site.
Automate your entire infrastructure deployment using scripts or templates so that a complete environment can be recreated from scratch in a new region. Store these automation artifacts in a version-controlled repository hosted outside the primary cloud region. The ability to rebuild your infrastructure from code is the most reliable form of disaster recovery.
Test your DR plan at least quarterly by performing a full failover to the secondary region and running production traffic through it. Untested DR plans frequently fail when needed because of configuration drift, missing resources, or outdated procedures. Document the results of each test and update your runbooks based on lessons learned during the exercise.