We The Business web TBW say that Referral marketing is a process to encourage and significantly increase referrals from word of mouth, perhaps the oldest and most trusted marketing strategy. This can be accomplished by encouraging and rewarding customers, and a wide variety of other contacts, to recommend products and services from consumer and B2B brands, both online and offline. the referrers benefit from existing customers by having increased visibility or recognition as a specialist or by gaining special treatment, especially if the customers become the partners of company Referral-based customers are better matched. The referred customers are likely interacting with people similar to themselves. Existing customers know the purpose of marketing and understand the need for potential clients. The referrers can measure a good fit between the two and the well-matched customers can help the company produce more profits at a lower cost. The value and contribution of customers acquired through referral campaigns are higher than those of non-referred customers.