In this study and research work, new possibilities of application of software, methods, techniques and tools based on business intelligence and intelligent business systems from the aspect of sustainable development and environmental protection will be presented. In the theoretical part, the analysis of recent scientific and professional literature in the field of application of business intelligence and methods, techniques and tools in the function of business optimization and environmental protection and sustainable development was undertaken. In that part, the theoretical foundations of business intelligence, decision support systems, GIS software, OLAP technology, as well as techniques for discovering knowledge in data - Data mining - will be presented. The paper will analyze the current state of application of business intelligence concepts in business systems in the Republic of Serbia. The results of the survey conducted in small and medium-sized enterprises in Serbia, different in type of activity, ownership and organizational structure, on a representative sample unequivocally indicate that: Intelligent decision support systems functionally influence the improvement of the business of small and medium-sized business systems, forming a positive attitude about the effects of the application of the development of intelligent decision support systems in enterprises. In this context, for the needs of the research, a survey was conducted in a specific business system engaged in the production and sale of wood products, where the possibilities of applying new sophisticated technologies in the function of optimizing business operations and environmental protection and sustainable development were explored.