CALMS model

  1. Culture (a culture of shared responsibility and common goals)
  2. Automation (automating testing and product deployment first and foremost. Everything that can be automated to save time should be automated)
  3. Lean (focus on eliminating activities that do not deliver value)
  4. Measurement (making informed decisions based on data, defining success criteria)
  5. Sharing (openness and transparency, sharing knowledge and reducing feedback turnaround time)

Key Performance Indicator (KPI) for DevOps measurements:

  1. Deployment frequency (how often new versions are released)
  2. Change lead time (how long changes remain in development)
  3. Mean time to detection (how quickly you detect problems)
  4. Mean time to recovery (how quickly you fix problems)
  5. Change failure rate (how often releases contain errors)

CALMS is an acronym used to describe the five key DevOps practices. Each letter represents one of these practices:

  • C -- Culture. This practice describes creating a supportive environment for collaboration among team members.
  • A -- Automation. This is a key component of DevOps that emphasizes the importance of automating development, testing, deployment, and monitoring processes. Automation helps reduce manual labor, increase efficiency, and lower the risk of errors.
  • L -- Lean. This practice means that all steps in development and deployment should be optimized for maximum speed and reliability.
  • M -- Measurement. Measurements allow you to collect data about processes and outcomes, identify areas for improvement, detect problems, and determine performance metrics.
  • S -- Sharing. This component includes sharing knowledge, training, and collaboration across teams. It emphasizes the importance of open communication and information exchange for improving development processes.