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by yareally 4658 days ago
Play 2.0 comes with Netty[1] built into it for making asynchronous requests, websockets and REST easier to handle. Netty is what replaces Tomcat unless you choose to use a third party plugin that builds your Play 2.0 website as a WAR file. Also, with Netty, it builds the entire site into a self contained module that you can run with one click anywhere you have the JVM installed (and the dependencies such as the DB if not using the built in H2). I found it useful for quick presentations or portability.

[1] http://en.wikipedia.org/wiki/Netty_%28software%29