Unit 10 — Continuous Integration, Delivery & DevOps¶

Learning objectives¶

Explain continuous integration as a team practice, not merely a CI server.
Design a basic pipeline with fast feedback and quality gates.
Distinguish continuous delivery from continuous deployment.

Continuous integration¶

Teams integrate small changes frequently into a shared mainline. Automated checks detect integration problems early.

flowchart LR
    C[Commit / Pull Request] --> B[Build]
    B --> L[Lint / Static Checks]
    L --> U[Unit Tests]
    U --> I[Integration Tests]
    I --> P[Package]
    P --> D[Deploy to test/staging]

Pipeline principles¶

Fail fast on cheap checks.
Keep builds reproducible.
Avoid hidden manual steps.
Store configuration as code when practical.
Protect secrets.
Make failures visible and actionable.

DevOps¶

DevOps emphasizes cooperation between development and operations, automation, observability, shared responsibility, and rapid feedback from production-like environments.