In this final thesis I will present the facts related to customer relationship management systems, or CRM, and the ways in which these systems affect business, manufacturing and marketing processes within a company, while at the same time naming the basic functions of a CRM system and in what way can they improve the organization structure within a company. Using the example of the company and their Salesforce CRM Web platform, I will explain the processes of data entry, monitoring active marketing campaigns and detailed use of the tools available within the specified platforms. Likewise, there will be a comparison of the Salesforce CRM platform with other major companies and their CRM solutions with an emphasis on Microsoft, Oracle and SAP AG, as well as a comparison with the Sugar CRM platform that was used for the purposes of the subject at the North University along with their advantages and disadvantages through comparison display monitoring marketing processes between Salesforce and Sugar CRM platform, a brief history of the development of CRM systems, their relationship with the ERP systems and the availability and popularity of other CRM systems currently available on the market.