3. What are cross-cutting concerns?
In any application, there is some generic functionality that is needed in many
places. But this functionality is not related to the application's business logic.
Suppose you perform a role-based security check before every business method in
your application. Here security is a cross-cutting concern. It is required for any
application but it is not necessary from the business point of view, it is a simple
generic functionality we have to implement in many places in the application. The
following are examples of the cross-cutting concerns for the enterprise application.