-Microsoft Exchange Server Administration (Exchange 2003/2007/2010/2013) (30,000 users)
-Blackberry Enterprise Server Administration (BES 4.x/5.X) (7,000 users)
-Microsoft Office Comminication Services (OCS)/Lync Administration (OCS 2007, Lync 2010) (15,000 users)
-Messaging and Unified Communications Server Administration (15,000 users)
-Hosted Exchange 2010, Exchange 2013, Linux Hosted mail Platform (Openwave, Postfix)
-TTMail Hosting Platform (Exchange 2003)
-ETRN Hosting
-Mail platform for Smart Message
-Mobile Device Management (MDM)
-Windows Server 2003, 2008 Administration
-Clustering, Backups, Upgrades
-Technical Support on Exchange, OCS, Blackberry, Unified Communication.