Enterprise applications have some common cross-cutting concerns that are applicable to different types of Objects and application modules, such as logging, transaction management, data validation, authentication, etc. The modularity of application is achieved by classes in Object-oriented programming. In AOP, application modularity is achieved by Aspects and they are configured to cut across different class methods.
AOP takes out the direct dependency of cross-cutting tasks from classes that are not possible in normal object-oriented programming. For example, we can have a separate class for logging but the other classes will have to call these methods. But, in AOP we configure the aspects and method execution happens automatically.
