This study explains the implementation of an environmental management information system that supports the sustainability goals of Nike using the technology-organization-environment (TOE) framework of Tornatzky and Fleischer. Literature review is applied to a single firm in using the TOE framework, with particular emphasis on the technological context of the framework. The use of Nike’s firm level decision support systems is highlighted in this study. Suggestions are made about improving Nike's Material Sustainability Index (MSI), its key sustainability tool, which is at the heart of the firm's group decision support system tool.