What is Aspect?

Aspects, in the context of software development, often refer to Aspect-Oriented Programming (AOP). AOP is a programming paradigm that aims to increase modularity by allowing the separation of cross-cutting concerns. Cross-cutting concerns are aspects of a program that affect other concerns. These concerns often cannot be cleanly decomposed from the rest of the system in both design and implementation, and can result in code scattering or code tangling. Aspects are used to implement cross-cutting concerns such as logging, security, and transaction management. Libraries and frameworks like Spring AOP (Java) and PostSharp (.NET) facilitate the implementation of AOP principles.