This document summarizes a presentation on modeling business ecosystems using network analysis. It begins with defining key concepts like business ecosystems, value chains, and value networks. It then outlines the presentation agenda and discusses various existing approaches to modeling value networks and ecosystems, noting their critiques. The document presents the research aim to develop a methodology called MOBENA (Methodology of Business Ecosystem Network Analysis) to systematically study ecosystem structure and flows. It describes the five phases of MOBENA: defining the ecosystem perimeter and elements, developing an ecosystem representation model, validating the data, analyzing the ecosystem, and simulating ecosystem evolution. It provides an example application to the digital imaging ecosystem.