World Class Products like Flipkart, Uber, Hotstar are not made in a day, they are made by the efforts of many people which includes UX,Engineering, Products and other segments. with time these products are grown up and becoming better, user friendly and feature rich in newer versions. But the question is how they are doing it? How they are understanding the requirements of millions of users and implementing in such a way that it satisfies the needs of most of the users