Exchange 2003 is the Microsoft messaging and collaboration server designed to help your business communicate more effectively. Along with the rich client functionality provided by Microsoft Office Outlook® 2003, Exchange 2003 offers mobile, remote, and desktop e-mail access with state-of-the-art security and privacy; lower cost of ownership through the services provided by Microsoft Windows Server™ 2003; high reliability and outstanding performance; e-mail-based collaboration; and easy upgrading, deployment, and administration. Discover how Exchange 2003 can benefit you with the new and enhanced abilities and features described on this page.