My former colleagues Bill McNee, Bruce Guptill and Mike West have finished a large survey on SaaS adoption in enterprises and summarize it in this Sandhill column. General conclusion - it's being adopted "bottoms up" in a variety of spots across the enterprise and user satisfaction is "exceptionally high"
I was surprised to see Finance/Accounting adoption lower than "specialized verticals". A few days ago, Dennis Howlett put together a quick pricing spreadsheet on some of the SaaS accounting packages and I remember thinking there were so many more including NetSuite, Intacct and others as Jeff Kaplan's Showplace lists. Without the benefit of the sample Bill and Co had access to, I would have argued it was the highest area of adoption (or tied with SFA in CRM) with 33% penetration...