Definition: DevOps is a set of practices combining software development (Dev) and IT operations (Ops) aimed at shortening the software development lifecycle and delivering high-quality software continuously.
Core Objective: Improve collaboration, communication, automation, and integration between developers and operations teams.
Pre-DevOps Era: Traditional IT with siloed Development and Operations teams, leading to slower deployments, frequent errors, and poor communication.
Origins of DevOps:
Key Historical Milestones:
• 2009: Patrick Debois organizes first DevOpsDays.
• 2010: The “Continuous Delivery” book by Jez Humble and David Farley published.
• 2013: “The Phoenix Project” novel by Gene Kim, popularizing DevOps concepts globally.
| Aspect | Traditional IT | DevOps Approach |
|---|---|---|
| Team Structure | Siloed | Cross-functional |
| Release Cycle | Months or weeks | Days, hours, or minutes |
| Deployment | Manual, infrequent | Automated, continuous |
| Collaboration | Limited communication | Strong communication & integration |
| Risk Management | Reactive to incidents | Proactive & preventive |