What does Continuous Integration (CI) mean?

Continuous Integration (CI) is a development practice in which code from all branches is regularly merged into the main one, and then automatically checked and tested. The core idea is to catch errors as early as possible, while changes are still small and understandable.

#How CI works

1. The developer makes a commit and pushes the code to the repository.
2. The CI server triggers (for example, GitHub Actions, Jenkins, GitLab CI).
3. It automatically runs:

• the project build;
• the tests;
• linting and code quality analysis;
• security and dependency checks.

4. If something fails, the developer gets a notification and quickly fixes the error.

#Goals of CI

• Early stability checks - errors are caught right after the commit.
• Conflict-free integration - frequent merges prevent "merge hell".
• Faster development - automation removes the routine of testing and building.
• Quality assurance - code will not enter the main branch until it passes all checks.

#Example

Every pull request automatically triggers a pipeline: → build, → tests, → status report. If all checks are green, the PR can be merged.

#Conclusion

Continuous Integration is the project's automated "watch post": it guarantees that new code is immediately checked, compatible, and does not break the system, creating the foundation for stable and fast development.