SharePoint Portal Server:

• SharePoint Portal Server is a predecessor to MOSS 2007.
• SharePoint Portal Server is the global portal offering features like global navigation and searching.
• SharePoint Portal Server is a portal server that connects people, teams, and knowledge across business processes.
• SharePoint Portal Server integrates information from various systems into one secure solution through single sign-on and enterprise application integration capabilities.
• It provides flexible deployment and management tools, and facilitates end-to-end collaboration through data aggregation, organization, and searching.
• SharePoint Portal Server also enables users to quickly find relevant information through customization and personalization of portal content and layout as well as through audience targeting.