What is DevOps?
DevOps is a combination of two words:
- Dev = Development (writing code)
- Ops = Operations (running and managing that code on servers)
DevOps is a culture which improves the organisation's ability to deliver applications.
It's a way of working where software developers and IT operations teams collaborate closely to build, test, and release software faster and more reliably.
What is the purpose of using DevOps?
Before DevOps, delivering software was slow, manual, and error-prone.
Problems Before DevOps:
- Developers and operations teams worked in separate silos.
- Manual processes took a lot of time.
- Bugs and miscommunications happened often.
- Releasing updates was risky and was done only a few times a year.
How Developers Deployed Code Before DevOps
- The developer writes code on their local computer.
- The developer sends code to the QA (Quality Assurance) team.
- QA manually tests the code.
- If all is fine, the QA passes it to a release manager.
- The release manager schedules a deployment time (usually late nights or weekends).
- The system admin manually copies the code to the production server.
- If something breaks, everyone scrambles to fix it.
How DevOps Can Help
- Developers, testers, and ops work together.
- Code is automatically tested and deployed.
- Mistakes are caught early.
- Software can be released in minutes or hours instead of weeks.
DevOps Flow
- The developer pushes code to GitHub.
- CI tools run automated tests.
- CD tools deploy the code.
- Monitoring tools check for issues.
Software Development Life Cycle (SDLC)
SDLC is a step-by-step process to build software. It helps ensure the software is high quality, cost-effective, and delivered on time.
DevOps improves SDLC
- Automating testing and deployment
- Reducing manual errors
- Providing faster feedback
- Ensuring better collaboration
- Making releases more
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