In simple words, CRM is a popular form of software widely used by businesses to manage the relationship with their customers and clients. ERP is different. CRM can be just a part of an ERP, while the ERP is a unified program, which can be used by an organization, from managing business processes to maintaining stocks in a store, to handling the hiring process, to administrating the service-delivery, to processing salaries. With ERP, an organization is able to put all its emphasis on the enterprise resource planning as well as increasing the overall business efficiency, effectiveness, and economy of the enterprise.