Web Server includes a Java Platform, Enterprise Edition (Java EETM) 5 compliant implementation of the Java Servlet 2.5 and JavaServer PagesTM (JSP) 2.1 technology specifications. Web Server provides the flexibility and reliability needed to design and deploy web applications that comply with Java technology standards.
Java Servlet technology provides web developers with a simple, consistent mechanism for extending the functionality of a Web Server and for accessing existing business systems. JSP technology provides a simplified and a fast way to create dynamic web content. JSP technology enables rapid development of web-based applications that are server and platform-independent.
For information about these technologies, see http://java.sun.com/javaee/5/docs/tutorial/doc/.