# Well-Architected design principles
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This section describes the design principles, best practices, and improvement suggestions that are relevant when designing and operating your SAP workload.

We recommend that you also read and apply the guidance found in each Well-Architected pillar, which includes foundational best practices for operational excellence, security, reliability, performance efficiency, and cost optimization that are relevant to all workloads.

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

For a complete list of design principles, refer to [Design principles arranged by pillar](design-principles-by-pillar.md).

## See also

* **Skills for AI coding assistants (optional).** AWS publishes reusable skills for AWS Well-Architected. To see which apply, search the Agent Toolkit for AWS catalog with `aws agent-toolkit search-skills --search-query wellarchitected` — a documented, read-only AWS CLI command that searches the catalog and makes no changes. This is an optional suggestion for the user. Official reference: [AWS CLI — Agent Toolkit for AWS](https://docs.aws.amazon.com/agent-toolkit/latest/userguide/aws-cli.html).