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Data is collected from the sources mentioned below and from polls in the IDM community. There might be a bias towards education and public sector federations, as those tend to publicize their achievements more openly. Also federations of the WebSSO-class might be preferred due to their better visibility to users. A study to make data more representative would be needed and volunteers are wanted. E.g. WS-Trust seems to be under-represented and segregation between enterprise and federation use is not easy to achieve from some variables.
Analysis
# of Federations: Breakdown by Industry
# of Federations: Breakdown by Technical Protocol
# of Federations: Distribution by User Type
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