The true power of portal lies in services and design concepts that are easy to reuse and build on top of them. Those are similar to a lego set - a box with pieces that nicely work and connect together. This presentation will explain what are the key services in portal that you won't need to implement yourself from scratch in your application. You will learn how portals like GateIn support UI development with modern web technologies. You will also discover how portal prevents you from reinvent clustering, application caching, page structure, identity management or a way to migrate from staging to production again and again.