"Apache Tomcat provides a JSP deployment platform. You can use this to deploy Java applications using a Web interface or for supporting Web service application deployments. In this series, you'll be using Java technology as the Java services platform and, later, as a solution for Java and PHP cross-platform development.
"Tomcat is probably the easiest component of the system to install and deploy. As a native Java application, once you have the Java application installed, installing and setting up Tomcat is very straightforward."