AWS Whitepapers

“When you write critical user stories for your architecture, include performance requirements, such as specifying how quickly each critical story should execute. For these critical stories, implement additional scripted user journeys to ensure that you know how these stories perform against your requirement”
― AWS Whitepapers, Performance Efficiency Pillar: AWS Well-Architected Framework

“feedback on quality, and bug fixing. These accelerate beneficial changes entering production, limit issues deployed, and enable rapid identification and remediation of issues introduced through deployment activities or discovered in your environments. Adopt approaches that provide fast feedback on quality and enable rapid recovery from changes that do not have desired outcomes. Using these practices mitigates the impact of issues introduced through the deployment of changes. Plan for unsuccessful changes so that you are able to respond faster if necessary and test and validate the changes you make. Be aware of planned activities in your environments so that you can manage the risk of changes impacting planned activities. Emphasize frequent, small, reversible changes to limit the scope of change. This results in easier troubleshooting and faster remediation with the option to roll back a change. It also means you are able to get the benefit of valuable changes more frequently. Evaluate the operational readiness of your workload, processes, procedures, and personnel”
― AWS Whitepapers, AWS Well-Architected Framework