How quickly can the software industry migrate to a SaaS model? Managed hosting provider \n\nSavvis has rolled out a service that it hopes will speed up the process by helping \n\nindependent software vendors offer their applications as a hosted service. \nMore on CIO.com\nWhat SaaS Means to the Future of the IT Department\n\nWho You Gonna Hire?\n\nSaaS's Impact on the Enterprise ERP Market\n\nReport: Enterprises Adopt SaaS Aggressively\n\nUnderstanding Zoho, the Quiet Company Taking on Google and Microsoft\n\nThe service allows software vendors to take a single-tenant application and offer it as a \n\nhosted service to multiple clients, says CTO Bryan Doerr. It is available first in the \n\nUnited States and the United Kingdom, and will be offered worldwide by the end of the year.\n\nSavvis partnered with Parallels to use its Virtuozzo Containers virtualization software to \n\noffer the service. The product divides a server OS into individual containers, each of which \n\nis assigned to a vendor customer and hosts multiple instances of its application. Customers \n\nalso use Parallels' Automation software for provisioning accounts, billing and linking to \n\npayment systems.\n\nMore and more end customers are turning to SaaS to reduce costs, putting pressure on \n\nsoftware vendors to offer their applications as services. Customer relationship management \n\nhas seen the widest uptake, with 15 percent of software revenue in 2007 coming from SaaS \n\napplications, according to Gartner. The fastest growing segments are for office suites and \n\ndigital content creation tools, where SaaS revenue will roughly double on average each year \n\nfrom 2007 to 2011, Gartner says.\n\nSome vendors have developed multitenant versions of their applications, which allow multiple \n\nend users to access a single instance of their software. Savvis hosts applications for some \n\nof those vendors, but the new service is for vendors that have yet to develop multitenant \n\nproducts. They don't need to rewrite applications to use the service, according to Doerr, \n\nand need only to bring it in and test it in the SaaS environment. "We think [vendors] will \n\nuse this as a quick go-to-market [option] and eventually rewrite their application to be \n\nnatively multitenant," Doerr says.\n\nSavvis competes with other managed hosting providers such as AT&T and Terremark, SaaS \n\nhosting specialists such as OpSource and platform providers such as Salesforce.com and \n\nMicrosoft.