The difference between CRM and R/3 is R/3 is an integration of different APPLICATION suits; it has its own architecture and way of functioning. Coming to CRM it is all about maintaining the relationship with a customer. It is supposed to enhance the profit of the company or organization since the ultimate goal of any company is profit. Therefore CRM is ONE step ahead for their goal achievements.
Whereas SAP R/3 is a 3 tier based on client or SERVER based application. One layer is presentation layer i.e Client which INTERFACES with the end user. Second layer is application layer for all business-specific requirements i.e program, and third is database which contains all information and records about the system, including transactional and configuration data. SAP R/3 has been developed in its own language called ABAP (Advanced Business Application Programming).

The difference between CRM and R/3 is R/3 is an integration of different application suits; it has its own architecture and way of functioning. Coming to CRM it is all about maintaining the relationship with a customer. It is supposed to enhance the profit of the company or organization since the ultimate goal of any company is profit. Therefore CRM is one step ahead for their goal achievements.
Whereas SAP R/3 is a 3 tier based on client or server based application. One layer is presentation layer i.e Client which interfaces with the end user. Second layer is application layer for all business-specific requirements i.e program, and third is database which contains all information and records about the system, including transactional and configuration data. SAP R/3 has been developed in its own language called ABAP (Advanced Business Application Programming).