This document discusses a corporate sustainability performance assessment tool developed by Siemens to help organizations evaluate and improve their sustainability programs. The tool is based on years of research tracking how corporate attitudes toward sustainability have evolved from seeing it as a costly requirement to recognizing its business benefits. It analyzes an organization's sustainability structures, attitudes, and activities to determine their stage of sustainability achievement and identify actions to advance to higher stages. Taking Siemens' online survey allows an organization to learn about their performance and get expert advice on improving their sustainability program.