The AWS Well-Architected Framework has five pillars:

1. Operational Excellence
2. Security
3. Reliability
4. Performance Efficiency
5. Cost Optimization

Among the options:

• Cost optimization is one of the five pillars
• Patch management is part of operational excellence
• Business technology strategy is not a specific pillar
• Physical and environmental controls are part of security considerations

The correct answer is Cost optimization as it is one of the core pillars of the AWS Well-Architected Framework.