Sometimes, designers create ego-centric work. It happens when all the UX requirements are met by the UI designer, but s/he continues adding design work to use his or her creativity, or to test out new practices, or to add elements that the designer feels are necessary, based on taste and preferences.
MVP works the opposite way; it means creating and designing a basic version of a product that EARLYADOPTERS can use or buy. The main goal is to bring the product to the market as soon as possible without any non-essential FEATURES.
Additional features and design elements are added based on the feedback of real users rather than a designer’s ideas and assumptions. Many of the world’s most popular products have been developed using MVP practice; Twitter is an example.