GfK Aktiengesellschaft provides information and consulting services in the areas of consumer goods, pharmaceuticals, retail, and services industries, as well as media information services worldwide. It operates in five segments: Custom Research, Retail and Technology, Consumer Tracking, Media, and HealthCare. The Custom Research segment provides information services on operational and strategic marketing decisions, which include tests and studies on product and pricing policy, on brand positioning and brand management, on traditional and modern forms of communication with consumers and users, on optimizing distribution, and on customer loyalty issues. The Retail and Technology segment offers information services based on surveys and analyses of sales of technical consumer goods in the retail sector. The Consumer Tracking segment provides information services based on surveys and analyses of the purchasing decisions and behavior patterns of consumers. The Media segment offers information services on the intensity and nature of media usage and acceptance. The HealthCare segment provides information and consulting services for health markets. These services include analyses of product development and market communication, image cultivation and price control of medicines, market positioning, and customer satisfaction and information on the sales volumes of products used in the dental and veterinary sectors and in laboratories. The company is headquartered in Nuremberg, Germany.