Michael Bartosh (September 18, 1977 — June 11, 2006) was president and CTO of 4am Media, Inc, an Apple Certified Trainer, certified member of the Apple Consultants Network, published author and former systems engineer for Apple Computer. His main focus and expertise was directory services and integration, and was considered by members of the Macintosh support and development community to be one of the foremost experts on the subject, having literally "written the book."

His most recent work includes Mac OS X Tiger Server Administration (published posthumously), Essential Mac OS X Panther Server Administration, articles published on O'Reilly network (Open Directory and Active Directory parts 1-4 and Panther and Active Directory ), as well as presentations and classes at many training centers/events, trade shows and conferences. macretreats.com O'Reilly Mac OS X 2003 Macworld - Speaker Bios LISA '04 - Technical Sessions He was also a regular contributor on several technical mailing lists related to Mac OS X and Mac OS X Server.

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