In which cases should automated tests be integrated into the development process?

Automated tests should be integrated into the development process in the following cases:

• When the project reaches a sufficient size and complexity so that manual testing becomes inefficient.
• To verify critically important functions where errors could lead to serious consequences.
• When frequent releases and quick feedback on code quality are needed.
• For regression testing to ensure that new changes do not break existing functionality.
• In teams practicing CI/CD, where test automation is part of the build pipeline.

Example: if you are developing a web application with a lot of business logic, automated unit tests and integration tests will help quickly identify errors when adding new features.