Navigation rules tells JSF implementation which page to send back to the browser after a form has been submitted
<navigation-rule>
<from-view-id>/page1.jsp</from-view-id>
<navigation-case>
<from-outcome>eventAction</from-outcome>
<to-view-id>/page2.jsp</to-view-id>
</navigation-case>
</ navigation -rule>
The above configuration says that navigation will happen to page2.jsp if the action eventAction happens inside page1.jsp
See the rightside video on Getting Started with Servlet in Java: -
