You can use Eucalyptus software along with IT resources (servers, networks, storage) to form your own data center into a private cloud. Many companies building private clouds are concerned about the lack of standards in this emerging area. They don’t want to make a choice now that will lock them in to a specific vendor and make it hard to switch in the future.
Eucalyptus provides an integrated set of application programming interfaces (APIs) that are compatible with Amazon Web Services, including Amazon’s Elastic Compute Cloud (EC2), Amazon Simple Storage Service (S3), and Amazon Elastic Block Store (EBS).
Eucalyptus Systems understands it needs to develop a large ecosystem of third-party software solutions to help increase demand for its private cloud platform. So far, Eucalyptus has partnered with some key cloud companies including AppScale, Canonical, CohesiveFT, Rightscale, rPath and Ylastic, providing solutions that extend the usability and accessibility of Eucalyptus. The company’s partnership with Canonical has led to some interesting developments with Ubuntu — a community based open-source Linux-based operating system for servers, laptops, and desktops). Many companies begin looking at private clouds because they want to bring the public cloud qualities of elasticity and self-service inside the firewall. The Ubuntu Enterprise Cloud (which is powered by Eucalyptus) allows companies using Amazon’s EC2 platform to extend these compute services for use in a private cloud.
Source of Information : cloud computing for dummies 2010 retail ebook distribution