# Performance efficiency The performance efficiency pillar focuses on the efficient use of computing resources to meet requirements and maintaining that efficiency as demand changes and technologies evolve. Take a data-driven approach to selecting a high-performance architecture. Gather comprehensive data on the architecture, from the high-level design to the selection and configuration of resource types. Consider your architectural choices on a cyclical basis to take advantage of the continually evolving set of services and solutions. Metrics assist with understanding deviation from expected performance so you can take action. A data driven approach assists with making tradeoffs with your architecture to improve performance, reduce cost, or improve the developer experience. **Topics** + [Design principles](design-principles-perf.md) + [Architecture selection](gameperf01.md) + [Region selection](gameperf02.md) + [Iterative development](gameperf03.md) + [Compute and hardware](gameperf04.md) + [Compute selection](gameperf05.md) + [Data management](gameperf06.md) + [Networking and content delivery](gameperf07.md) + [Process and culture](gameperf08.md) + [Resources](resources-perf.md)