What makes the WebSphere programming model so compelling? Why is WebSphere Portal server fast becoming the world's premier portal server in sales and functionality? What are portlets? What is the open Portlet API? How is it possible to secure and manage large Web portals that each have their own distinctive look? Does WebSphere Portal support B2B, or B2C, or B2E, or all of them? Which topologies does it support? Is it J2EE certified? This book answers these and many more such questions and covers everything from basic e-commerce concepts to advanced three-tier Internet topologies. Completely updated for V5.1.x, the authors systematically guide you through IBM's WebSphere Portal product, which includes the Portal server, the Personalization server, Workplace Web Content Management, Document Manager, versatile search engine, collaboration component, new Virtual Portal and Business Process Integration, and Task Management features. Software developers who are creating simple portlets and JavaServer Pages (JSPs) or are well-versed in using JavaBeans will find this book's contents relevant. It covers installation, configuration, administration, tuning, and usage of WebSphere Portal server software. It discusses portlets, servlets, security, single sign-on, transactions, session management, and scaling as it relates to WebSphere Portal server.