The document discusses DevOps concepts including problems with traditional development approaches, what DevOps is, and CALMS principles. Some key points: - Traditional approaches had long feedback loops between development and users that hindered agility - DevOps aims to minimize this loop by having developers also handle operations - CALMS outlines cultural aspects of DevOps including culture, automation, lean processes, metrics, and sharing knowledge.

1. DevOps
Tir 98
Tosan
Amin Arab
https://www.linkedin.com/in/amin-arab-a653b13a/

2. Content
• What’ problem before DevOps ?
• What’s DevOps ?
• CALMS
• Pre Requirements

3. Problem
• Know-know
• Know-Unknown
• Unknown-Know
• Unknown-Unknown
• Agility
• Try-Error
• Minimum feedback loop

4. Problem
Continuous
Improvement
Make it work
Then make it right
Then make it fast
Then make it cheaper

5. Solution = DevOps
• you build it , you run it
• minimum Feed back loop
between Developer , User

6. What’s CALMS ?

7. Culture
Values

8. Culture
Responsibilities

9. Culture
Skills

10. What’s CALMS ?

11. Problem
Continuous
Improvement
Make it work
Then make it right
Then make it fast
Then make it cheaper

12. Automation
Agile DevOps

13. Automation

14. Automation
Continuous Deployment
Feature Toggle Strategy

15. Automation
Continuous Deployment
Green-Blue Strategy

16. Automation
Continuous Deployment
Canary Release Strategy

17. Automation
Continuous Deployment
A-B Testing Strategy

18. Automation

19. What’s CALMS ?

20. Problem
Continuous
Improvement
Make it work
Then make it right
Then make it fast
Then make it cheaper

21. Lean

22. What’s CALMS ?

23. Metrics

24. What’s CALMS ?

25. Sharing

26. Pre Requirements
Commitment
Test
Refactor

27. References
• http://taakestan.com/index.php/2012-09-09-10-30-14/54-devops-
continous-delivery
• https://www.scrum.org/resources/introduction-cynefin-model
• https://docs.openshift.com/container-
platform/3.3/dev_guide/deployments/deployment_strategies.html
• https://devopedia.org/devops-metrics
• https://alertops.com/mttd-vs-mttf-vs-mtbf-vs-mttr/
• https://martinfowler.com/books/refactoring.html
• https://refactoring.guru/refactoring
• https://www.oreilly.com/library/view/clean-code/9780136083238/

28. Any Question ?