The reliability pillar encompasses the ability of a workload to perform its intended function correctly and consistently when it’s expected to. This includes the ability to operate and test the workload through its total lifecycle.
Resiliency is a shared responsibility between AWS and you. It is important that you understand how disaster recovery (DR) and availability, as part of resiliency, operate under this shared model.
There are four best practice areas for operational excellence in the cloud: Networking, quotas, and constraints Change management and operational resilience Observability and failure management Workload architecture Continuous testing of critical infrastructure