IBM targets large enterprises with its cloud computing services as an alternative to services from Google and Amazon that focus more on private users. IBM's main data centers are located at its Almaden Research Center and it cooperates with universities like Stanford and MIT. IBM's cloud services run Linux as the operating system and use Xen for virtualization and Hadoop as middleware. IBM hopes its CloudBurst services, which provide prepackaged and self-contained hardware, software, and services, will help customers reduce costs, improve services, and drive innovation through features like self-service portals and automated provisioning and deprovisioning of resources. As the cloud market continues to grow, IBM expects its cloud computing services to grow as well