Which of the following is a pillar of the AWS Well-Architected Framework?
Redundancy
Operational excellence
Availability
Multi-Region
Explanations:
Redundancy is not a pillar; it is a technique used within the Reliability pillar.
Operational excellence is one of the five pillars of the AWS Well-Architected Framework.
Availability is a key concept within the Reliability pillar, but it is not a standalone pillar.
Multi-Region is a strategy to improve resilience and availability, but it is not a pillar.
In my opinion, the answer is:
Operational excellence