Exchange 2003 is the Microsoft messaging and collaboration server designed to help your business communicate more effectively. It enables information workers to gain access to critical business communications whenever and wherever they need. Exchange 2003 server is designed to deliver greater security, availability, and reliability.

Microsoft Exchange 2000 delivers a reliable, scalable, and manageable infrastructure with 24×7 messaging and collaboration and low cost of ownership. It supports a wide range of collaborative activities, including group scheduling capabilities, discussion groups, and team folders, and it provides access to information across geographic, organizational, and technology barriers with features such as Instant Messaging, real-time data, and video conferencing.