Object-oriented architecture (OOA)

Objects are the fundamental and foundational building blocks for all kinds of software applications. The structure and behavior of any software application can be represented through the use of multiple and interoperable objects. Objects elegantly encapsulate the various properties and the tasks in an optimized and organized manner. Objects connect, communicate, and collaborate through well-defined interfaces. Therefore, the object-oriented architectural style has become the dominant one for producing object-oriented software applications. Ultimately, a software system is viewed as a dynamic collection of cooperating objects, instead of a set of routines or procedural instructions.

We know that there are proven object-oriented programming methods and enabling languages, such as C++, Java, and so on. The properties of inheritance, polymorphism, encapsulation, and composition being provided by OOA come in handy in producing highly modular (highly cohesive and loosely coupled), usable and reusable software applications.

The object-oriented style is suitable if we want to encapsulate logic and data together in reusable components. Also, the complex business logic that requires abstraction and dynamic behavior can effectively use this OOA.