The introduction of online business or selling products online is a mile stone in sales and marketing sector earlier. Now the introduction of mobile apps(mobile applications) has revolutionized the online sales and marketing sector. The mobile apps related to shopping and online E-market places like Amazon, shopify, Ebay and social networking apps like facebook, twitter, pinterest have set a new trend in online sales. The mobile apps for major E-marketing places like Amazon, Ebay, Shopify, Flipkart etc. can be downloaded for free and are very much popular. Most of the people prefer shopping online from these shopping apps rather than from websites because of the ease of use of the mobile apps. Some of the E-marketing places like Myntra.com understanding this trend are maintaining mobile apps alone instead of websites. The social networking sites like FaceBook, Twitter, pinterest etc. are also used to promote the business or to advertise about the business. The Facebook ha...