What architecture do you see in the application diagram?

The application diagram typically shows a multi-layer architecture, including the following components:

• Client-side (frontend) — responsible for user interaction.
• Application server (backend) — handles business logic.
• Database — stores data.
• External services or APIs — integration with third parties.

In the QA context, it is important to understand that the architecture can be monolithic or microservices, which affects the testing strategy. For example, a microservices architecture requires testing contracts between services, as well as integration and end-to-end tests.

The diagram may also highlight layers such as caching, message queues, which are important for assessing points of failure and load testing.