Mark McIntosh has over ten years of experience with open source projects in Content Management (Joomla, Mambo, Alfresco, Drupal), CRM's (Sugar vTiger XRMS) Messaging (Sendmail, Postfix, Jabber, Openfire) and Authentication (OpenLDAP, Netscape LDAP, Sun LDAP, SLES LDAP). His experience spans a multitude of environments including enterprise operating systems (Red Hat, Suse SLES, Ubuntu) non enterprise (Gentoo, Fedora Core, Debian) as well as the newer Cloud computing environments of Amazon EC2 and S3. Mark's experience also includes many proprietary enterprise products including Helpdesk systems (Altiris, Footprints, Heat, Magic), Virtualization products (VMWare ESX, VMWare GSX, XEN, EC2) Messaging (Exchange, Domino, Sametime). He has worked as a consultant on projects involving security, document management, and migration to and from open source to non-open source.