Built on the foundation of Windows Server 2003, SharePoint Portal Server 2003 extends Windows SharePoint Services by adding entire classes of functionality to the enterprise, connecting people, teams, and knowledge across business processes.

You can deploy the scalable and distributed architecture on a single server or server farm, by using top-down or bottom-up deployment, and in a centralized or decentralized model. The flexible deployment model, together with significant enhancements in scalability, performance, availability, and manageability, enable enterprise business solutions to start small and grow with an organization's needs.