Can you explain the principles and main concepts underlying continuous integration and delivery?

Continuous Integration (CI) is a practice of frequently merging code changes into a shared repository, usually several times a day. Each commit is automatically verified through builds and tests, helping to quickly identify errors and conflicts.

Continuous Delivery (CD) is an extension of CI, where changes are automatically prepared for release to production. This means the code is always in a deployable state, and the release process can be performed at any time with minimal effort.

Main principles:

• Automation of build and testing.
• Frequent integration of changes.
• Rapid feedback on code quality.
• Automation of deployment and release.

Example: in a C# project using CI/CD, after each commit, a build is triggered in Azure DevOps or Jenkins, unit tests are run, and if all succeed, artifacts are automatically deployed to the testing environment.