From CloudFoundry Blog, we got an exciting message,
Developers can now use vert.x, a framework for highly scalable web applications, with CloudFoundry.com.
Because compare to other event-driven application frameworks, vert.x performances pretty great and Cloud Foundry has been a leader in providing an open Platform as a Service (PaaS).
Cloud Foundry is an open source cloud computing platform as a service (PaaS) software developed by VMware released under the terms of the Apache License 2.0. It is primarily written in Ruby. The source and development community for this software is available at cloudfoundry.org
Cloud Foundry is also a hosted service offered by VMware that runs using the Cloud Foundry software. This service can be accessed at cloudfoundry.com.
From Cloud Foundry Blog,Deploying vert.x Applications to Cloud Foundry,
vert.x is a framework that builds on event-driven architecture and asynchronous I/O, similar to Node.js, but utilizes JVM’s internal capabilities to handle multiple processes and inter-process communications. Using Java threads, vert.x applications can easily scale over available cores making better use of available resources.
vert.x is a community project sponsored by VMware.
reference,
http://en.wikipedia.org/wiki/Cloud_Foundry
Asynchronous Event-driven Network Application Framework:vert.x, Node.js or Netty