Reliability and resiliency in software systems are not achieved merely by adopting modern technology or cloud services but must be ingrained in the architecture of distributed systems, as demonstrated by Dynatrace during an AWS outage in Frankfurt. The incident showcased how Dynatrace's "Architected for Resiliency" approach, with its multi-node, multi-availability zone deployment, enabled automatic traffic redirection and minimized user impact, evidenced by only seven users experiencing issues. This was supported by Dynatrace's Real User Monitoring and Synthetic Monitoring, which detected and addressed disruptions efficiently. The blog emphasizes the importance of designing systems with high availability and resiliency from the outset, alongside continuous monitoring and validation to ensure they operate as intended. It highlights that resilient architecture requires ongoing investment and attention, including training and performance testing, to maintain its effectiveness in dynamic environments.