One of the big challenges for delivering rich, scalable applications on the web is building out web delivery environments. At the JavaOne conference this week, Morph Labs and Webtide have announced a proposed solution to this problem for developers of Java applications: The Morph Application Platform for Java. If you're familiar with how Software-as-a Service (SaaS) applications work, you can think of this new effort as a Platform as a Service (PaaS). It virtualizes an application environment and leverages cloud computing resources such as the Amazon Elastic Compute Cloud (EC2). Now in limited developer preview, this new platform is based on open source.