What types of testing do you know and have used in your project?

In projects, I used various types of testing, including:

• Functional testing — verifying that the functionality meets the requirements.
• Regression testing — ensuring that new changes haven't broken existing functionality.
• Integration testing — checking the interaction between modules.
• Performance testing — load testing to assess system stability.
• Automated testing — writing scripts to speed up repetitive checks.
• Security testing — identifying vulnerabilities and data protection.

For example, in one project, I automated regression tests to quickly verify critical scenarios after each release.