What layers do you include in architecture?

In test automation architecture, the following layers are usually distinguished:

• Test Data Layer — management of input data, preparation, and cleaning.
• Test Scenario Layer — description of test logic, steps, and checks.
• Application Interaction Layer — abstraction of working with UI, API, or other interfaces.
• Infrastructure Layer — environment setup, test execution, reporting.

This separation helps maintain code, reuse components, and quickly adapt to changes in the application.