Almost everywhere when we talk about delivery of a product, the first step comes in mind is it’s design. The more focus we put into the design, the better the product will look. Every design has some design principles that need to be followed while designing a product.  Hence, design principles have a crucial role in any product delivery. Design Principles help teams with decision making. In this article, We will discuss about ‘SOLID Principles-The Liskov Substitution Principle’. A few simple principles or valuable questions can guide our team towards taking relevant decisions. SOLID Principles are the set of five principles used to design a software. In fact, the word ‘SOLID’ is the acronym for the set of five principles that