# Appendix: Questions and best practices
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This appendix summarizes all the questions and best practices in the AWS Well-Architected Framework.

**Topics**
+ [Operational excellence](a-operational-excellence.md)
+ [Security](a-security.md)
+ [Reliability](a-reliability.md)
+ [Performance efficiency](a-performance-efficiency.md)
+ [Cost optimization](a-cost-optimization.md)
+ [Sustainability](a-sustainability.md)