Social Media Marketing and its importance :- Social media marketing is widely used in various businesses small business, banking, retail marketing and so on. It mainly focuses on people not products. With the explosion of internet based messages transmitted through the social media, they are now a main factor in influencing many aspects of consumer behavior like Awareness, Opinions, Attitudes, purchase decisions, post-purchase evaluations. Social media marketing helps marketers to track and measure what is shared in the social media in order to improve the offered message and adapt it more to the customer needs. The Internet has now become the most common tool that consumers use to find information on products or services that they planning on buying. Social media marketing services in India and across the world can be utilized to gain maximum visibility, increase sales and improve brand awareness. Therefore social media mainly affects the purchase decisions of customers because they usually seek opinions and recommendations of others.