What is Spring AOP?

Spring AOP (Aspect-Oriented Programming) is a module within the Spring Framework that enables the modularization of cross-cutting concerns such as logging, security, and transaction management. It achieves this by allowing developers to define 'aspects' that encapsulate these concerns and apply them to specific 'join points' (e.g., method executions) in the application code. This promotes cleaner, more maintainable code by separating concerns and reducing code duplication. Spring AOP commonly uses either proxy-based or AspectJ-based weaving to implement these aspects.