Describe what is happening in the current system (describe the AS-IS diagram)?

The current system implements a classic multi-layer architecture:

• The client part interacts with a REST API implemented on Spring Boot.
• On the server, requests are processed by controllers, which call the service layer for business logic.
• The service layer accesses the DAO (Data Access Object) for database operations via JPA/Hibernate.
• An asynchronous message queue (e.g., RabbitMQ) is used for background tasks.
• The entire system is deployed in Docker containers, facilitating deployment and scaling.

Thus, data flows from the controller through services to the database and back, ensuring separation of concerns and ease of maintenance.