Modern communication solutions, such as cloud telephone systems and computer integrated telephony, support Customer Relationship Management. All data on individual calls and customers can be directly collected during phone calls and stored centrally. Thanks to the central database, the information is made available throughout an entire company and can be used by other departments without delay. Complete telephone histories are created and stored for every customer and all transactions can be traced at any time by employees in different business areas. CRM functionality can be implemented by installing software modules directly or through a cloud service over the network. Cloud services offer the additional advantage that the customer does not need to maintain their own hardware or software for the CRM and the range of functions can be flexibly adapted to individual requirements.