Exam AWS Certified Cloud Practitioner topic 1 question 644 discussion

A. Scale globally in minutes. - performance efficiency pillar B. Adopt a consumption model. - cost optimization pillar C. Automatically recover from failure. - reliability pillar D. Make frequent, small, reversible changes. - operational excellence pillar

Automatically recover from failure: By monitoring a workload for key performance indicators (KPIs), you can trigger automation when a threshold is breached. These KPIs should be a measure of business value, not of the technical aspects of the operation of the service. This allows for automatic notification and tracking of failures, and for automated recovery processes that work around or repair the failure. With more sophisticated automation, it’s possible to anticipate and remediate failures before they occur. Ref link: https://docs.aws.amazon.com/wellarchitected/latest/reliability-pillar/design-principles.html

C. Automatically recover from failure https://aws.amazon.com/architecture/well-architected/?wa-lens-whitepapers.sort-by=item.additionalFields.sortDate&wa-lens-whitepapers.sort-order=desc&wa-guidance-whitepapers.sort-by=item.additionalFields.sortDate&wa-guidance-whitepapers.sort-order=desc "The reliability pillar focuses on workloads performing their intended functions and how to recover quickly from failure to meet demands. Key topics include distributed system design, recovery planning, and adapting to changing requirements."

The design principle of the reliability pillar of the AWS Well-Architected Framework is to automatically recover from failure.