The paper deals with integration of supply chains and specifically concentrates on the importance of distribution of information among various companies in the chain. It summarizes the most important concepts of supply chain management. Both technological changes and organizational improvements are essential for effective integration of supply chains. Therefore the paper shows how business process modelling can be used to analyze the existing processes and help in renovation and integration of those processes, with a special emphasis on an inter-organizational level. It is shown on a practical example, how sharing and strategic utilization of information in a supply chain can radically improve execution of vital business processes and help integrate processes in different companies. That leads to shorter cycle times, lower costs and inventory levels and better quality for the final customer.