The document discusses application portfolio management in mining and presents a classification reference model mapping vendor solutions to business capabilities. It begins by covering application portfolio management and the need for an industry reference model given the specialized nature of mining applications. An application classification model is then developed by researching 91 vendors and 323 applications. The model maps applications across 5 levels based on their purpose. Finally, the document explores how the reference model can be used for customer rationalization, analyzing vendor solution spread, and vendor comparison.