As the world's leading open source portal platform, Liferay portal provides a unified web interface to the data and tools scattered across many sources. Within Liferay portal, a portal interface is composed of a number of portlets, self-contained interactive elements that are written to a particular standard. As portlets are developed independently from the portal itself and are loosely coupled with the portal, they are apparently Service Oriented Architecture (SOA).
This book will show you how to develop and / or customize user interface of intranets or Internets with Liferay. In this chapter, we will look at: