Consider a banking application. The domain model for this application might include entities such as Account, Transaction, and Customer. Services could include operations such as TransferFunds and CalculateInterest. Value Objects might include concepts such as Currency and Balance. Aggregates could be defined around groups of related objects, such as an Account aggregate that includes the Account entity and related Transaction entities. Repositories would be used to manage the persistence of these entities. The MDA approach would be used to isolate the different layers of the architecture and use models to define the interfaces between them, making it easier to maintain and evolve the system over time.

https://www.omg.org/mda/