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Bắt nguồn từ DevOpsDay 2010, John Willis và Damon Edwards giới thiệu CMAS approach (Culture - Automation - Measurement - Sharing), 4 trụ cột của DevOps Sau đó Jez Humble thêm L (Lean Flow) trở thành CALMS Scaled Agile, nhận ra rằng Sharing đã nằm trong một phần của Culture, do đó S được bỏ đi và thay thế bởi R(Recovery)
- Culture: Create a culture of shared responsibility among all groups (development, operations, security, business, and others).
- Automation: Leverage automation as much as you can on your Continuous Delivery Pipeline.
- Lean Flow: Work with small batch sizes, visualize all your work, and avoid too much Work in Progress (WIP).
- Measurement: Measure your flow, your quality, and your performance in all environments, and whether you are achieving value.
- Recovery: Create low-risk releases. Devote energy to preparing how to recover from failure.