Portlets and Servlets
Although in most cases, portlets and the underlying portlet container ride on top of a servlet container, there are some differences between the two. Just the same, there are also many similarities that the two share.
This is a question that I'm often asked and I thought that I'd share my views with you this month in the monthly column "Community Tips" in the Portlet Community on Java.net. You can access the Portlet community by clicking here.
Also, let me know if you have a question that you would like to share with others. You might see the answer posted as a community tip or in the FAQ in the Portlet Community.