Design Principles are nothing but a set of thoughts that initiate the basis of any good product. No doubt that they continuously help teams to make decisions in delivering a good quality product. Organizations, individuals and product teams always get benefited from writing and following their design principles. If we talk about OOPs Principles, they deal with the principles to design a good quality software where Object Oriented Programming Language is being used for development. In this article, we will be focusing on the OOPs Principles that are used by Industry Designers & Developers in the real time projects. What are OOPs Principles? Object-Oriented Programming (OOP) principles are fundamental concepts that guide the design and implementation of software systems using object-oriented programming languages