# Design principles arranged by pillar
<a name="design-principles-by-pillar"></a>

These are the design principles outlined in this paper organized by pillar of the AWS Well-Architected Framework.

## [Operational excellence](operational-excellence.md)
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+ [1 - Design SAP workload to allow understanding and reaction to its state](design-principle-1.md)
+ [2 – Reduce defects, ease remediation, and improve workflow of SAP change](design-principle-2.md)
+ [3 – Understand how you will operate the workload](design-principle-3.md)
+ [4 – Validate and improve your SAP workload regularly](design-principle-4.md)

## [Security](security.md)
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+ [5 – Understand security standards and how they apply to your SAP workload](design-principle-5.md)
+ [6 – Use infrastructure and software controls to reduce security misconfigurations](design-principle-6.md)
+ [7 – Control access to your SAP workload through identity and permissions](design-principle-7.md)
+ [8 – Protect your SAP data at rest and in transit](design-principle-8.md)
+ [9 – Implement a security strategy for logging, testing, and responding to security events](design-principle-9.md)

## [Reliability](reliability.md)
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+ [10 – Design to withstand failure](design-principle-10.md)
+ [11 – Detect and react to failures](design-principle-11.md)
+ [12 – Plan for data recovery](design-principle-12.md)

## [Performance efficiency](performance-efficiency.md)
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+ [13 – Select the optimal compute solution](design-principle-13.md)
+ [14 – Select the optimal storage solution](design-principle-14.md)
+ [15 – Evaluate tuning options for the operating system, database, and SAP application](design-principle-15.md)
+ [16 – Understand ongoing performance and optimization options](design-principle-16.md)

## [Cost optimization](cost-optimization.md)
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+ [17 – Evaluate SAP architecture patterns for cost efficiency](design-principle-17.md)
+ [18 – Evaluate SAP compute resources for cost efficiency](design-principle-18.md)
+ [19 – Optimize SAP data usage for storage cost efficiency](design-principle-19.md)
+ [20 – Manage costs with visibility, planning, and governance](design-principle-20.md)

## [Sustainability](sustainability.md)
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+ [21 – Evaluate SAP architecture patterns to improve environmental sustainability](design-principle-21.md)