A move intended to capitalize on the budding cloud application deployment trend will unite virtualization vendor VMware with Java framework developer SpringSource.

VMware said Monday afternoon it is acquiring SpringSource, maker of the popular open source Spring framework for Java development and related technologies, for $362 million in cash and equity plus the assumption of $58 million of unvested stock and options. The two companies plan to build solutions for more efficiently running, building, and managing applications within internal and external cloud architectures.

[ Test Center: VMware vSphere 4 is the once and future virtualization king. | Earlier this year, SpringSource bought Web application and infrastructure management vendor Hyperic. ]

In a statement, VMware said modern computing environments are moving to an application- and data-centric world powered by virtualized and cloud platforms. "The combination of SpringSource and VMware capitalizes on this shift and places us right at the intersection of the most important forces in the software market today -- virtualization, modern application frameworks, and cloud computing," said Paul Maritz, president and CEO of VMware, in the statement.

VMware and SpringSource plan to develop integrated PaaS (Platform-as-a-Service) technologies to be hosted at customer datacenters or by cloud service providers. Customers using these technologies can build enterprise and Web applications and run these systems in the same vSphere-based internal or external clouds that can host and manage existing applications. VSphere is VMware's cloud-based OS.

The PaaS environment envisioned will feature Spring runtime components and management of the application layer via Hyperic technology, which SpringSource has acquired. The VMware VirtualCenter platform will be used for managing the infrastructure layer. "The two companies together can offer not only cloud infrastructure but a full solution for building and running applications on top of this cloud infrastructure," said Raghu Raghuram, vice president and general management of the server business unit at VMware, in an interview.

There is no set product roadmap yet for the VMware-SpringSource alliance, Raghuram said.

VMware and SpringSource complement each other, said Steve Herrod, VMware CTO and senior vice president of research and development, in a blog. Both companies have been focused on simplifying IT, with SpringSource concentrated on application-centric areas of IT and VMware geared to hardware infrastructure, he said.

"As a combined entity, the existing efforts and missions will continue, but we'll also work to jointly sever a whole new collection of tentacles ... the ones that unnaturally tie an application to the rigid way it must be deployed and managed," Herrod said.

In a blog, SpringSource CEO Rod Johnson also cited synergies. "Working together with VMware we plan on creating a single, integrated build-run-manage solution for the datacenter, private clouds, and public clouds. A solution that exploits knowledge of the application infrastructure and collaboration with middleware and management components to ensure optimal efficiency and resiliency of the supporting virtual environment at deployment time and during runtime," Johnson said. The solution planned will run on traditional Java EE application servers in a conventional data center or on Amazon EC2 and other environments as well as on the VMware platform, he said.

An analyst honed in on PaaS plans.