The analyst says that by 2010, 90 per cent of SaaS providers will have some open-source component in their technology infrastructure stacks to reduce their expenses.
This may include open-source operating systems, application servers, databases or other elements, says Gartner.
"Users, however, should not expect cost savings to be passed on to them in the form of lower prices. Vendors may choose to improve profitability or increase R&D efforts with their savings," said Robert DeSisto, a Gartner analyst.
DeSisto also warned that customers should "take an active role in governing the use of any open-source SaaS offering, specifically to ensure that the company is properly indemnified from any downstream patent infringement actions from the open-source elements that the SaaS providers are using".