It's worth considering what the definition of an application server is to make sure that the term means the same thing to everyone who uses it. So let us ask the question: what is an application ...

A Web server exclusively handles HTTP requests, whereas an application server serves business logic to application programs through any number of protocols. Let’s examine each in more detail.

What does application server actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

BEA, IBM, Oracle and Sun have made millions selling Java-based application server software--but now they're finding it harder to eke out a profit as their base products become commodities.

BEA, IBM, Oracle and Sun have made millions selling Java-based application server software--but now they're finding it harder to eke out a profit as their base products become commodities.

Oracle keeps up with roadmap plans announced at JavaOne 2010 and delivers the latest version of its Java app server, GlassFish Server 3.1.