What types of tests have you worked with — UI, API, end-to-end?

I have worked with different types of tests:

• UI tests — automation of the user interface using tools like Selenium or Cypress. They verify that interface elements are displayed and function correctly.
• API tests — testing REST or SOAP APIs, checking the correctness of responses, statuses, and data structures. I used Postman, REST-assured.
• End-to-end tests — comprehensive scenarios that go through all levels of the application, including UI, API, and database, to verify the entire business logic.

Each type of test addresses its own tasks and complements each other to ensure product quality.