In this 'Back to Basics' video, Peter explains how to use AWS for disaster recovery (DR) of on-premises applications. He discusses AWS Elastic Disaster Recovery (DRS), which continuously replicates on-prem servers to AWS, allowing quick recovery during outages. Peter emphasizes the importance of quantifying business impact, conducting DR drills, and understanding the difference between backup and DR. The video provides practical insights on implementing a cost-effective DR strategy using AWS to ensure business continuity and minimize data loss.