Book excerpt: Knowledge management involves any activity related to the capture, use and sharing of knowledge by an organisation. Evidence shows that these practices are being used more and more frequently and that their impact on innovation and other aspects of corporate performance is far from negligible. Today, there is a recognition of the need to understand and to measure the activity of knowledge management so that organisations can be more efficient and governments can develop policies to promote these benefits. This book offers a synthetic view of the results of the first systematic international survey on knowledge management carried out by national statistical offices in Canada, Denmark, France and Germany.