How is CRM and R/3 differ from each other?

R/3 is an integration of different application suits. It has its own architecture and way fo functioning. CRM is all about maintaining the relationship with a customer. It is supposed to enhance the profit of the company or organisation since the ultimate goal of any company is profit. Therefore CRM is one step ahead for their goal achievements. SAP R/3 is a 3 tier based client/ server based application. One layer is presentation layer (Client) which interfaces with the end user. Second layer is application layer for all business - specific requirements (Program), and third is database which contains all information and records about the system, including transcational and configration data.