The entire CRM application is divided functionally for different types of users and teams. Hence, if an organization is using CRM to manage its processes, the users from the Sales team would use the functionalities that come under the Sales module, while the users from the Marketing team would use functionalities that fall under the Marketing module. All these three functional modules come together to drive the entire lifecycle of gaining a new customer (Marketing), selling them the services (Sales) and maintaining the existing customers (Service Management).