Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Functionality of Interaction With Clients on the Basis of Extending the Configuration «1C: CRM» V.A. BULANOV, O.E. FOMICHEVA «1C: Trade and Customer Relationship Management (CRM)» («1C: CRM») of Rarus was specially created for trade and service companies that build a business management system in accordance with the CRM concept. The product is intended to organize the effective work of the departments of procurement, sales, service and marketing at all stages of working with clients. CRM (Customer Relationship Management System) is a strategy based on the use of advanced management and information technologies, with which the company builds mutually beneficial relationships with its customers. Despite the fact that CRM-systems have existed for a long time, the functional components of these systems constantly require improvement. The revision of the functional of interaction with clients based on the technology of expanding the configuration using data mining methods is considered. Keywords: CRM, «1C: Enterprise», configuration extension, statistical analysis, data mining, association search. DOI: 10.25791/pribor.01.2020.1143 Contacts: - Pp. 21-28.