Merrill Lynch says the public and private cloud infrastructure will be a $160 billion market by 2011. While there’s still plenty of room for growth among enterprises for straight ahead, consolidation-oriented server virtualization projects, many organizations are looking to take their virtualization deployments to the next level. By shaping their data centers into elastic and self-service platforms akin to those built by large cloud computing outfits such as Amazon.com and Salesforce.com.