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Listing on the web sites. Perhaps preferential listing ahead of non-commercial-affiliates. The present page listing available commercial services for CAS, for instance, is ordered alphabetically and puts the only JA-SIG Commercial Affiliate listed on that page well "below the fold".
Infrastructure
JA-SIG funds staff to support the project infrastructure, thereby lubricating the participation and effectiveness of commercial affiliates. Commercial Affiliates realize important value from the efforts of Anthony Whyte in Sakai, for instance.