Portals can be regarded as an information gateway for exchanging business information over the Internet. They are for delivering the right information to the right user, at the right time, to the right place, to make the right decisions. A portal is a packaged piece of information with the properties of self-servicing, personalization, and real-time delivery. From a business point of view, a portal is a mobile, self-explanatory, and just-in-time delivered piece of information. In e-Commerce, business information is the set of timed transactions that can be triggered by events in business activities. This chapter will illustrate and explain the architecture of intelligent business portals for Web-enabled business applications.