Gartner analyst Neil MacDonald estimates as many as 30 percent of SharePoint servers are deployed outside of the management of the IT department, an estimate underscored by a survey of 269 IT managers by Osterman Research that found 31 percent allowed affiliates to use SharePoint. Some 48 percent said they permitted contractors or consultants to use it. This can create a blind spot for IT that enterprises need to guard against, MacDonald told.

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