Cloud computing and software as a service (SaaS) are two very strong "disruptive" innovations that are changing the IT landscape forever by providing services to a large number of independent customers. SaaS and cloud capabilities are a best-fit model and an attractive option for companies that look to deploy state-of-the-art technology while conserving capital resources. A robust, trusted software infrastructure offers key technical elements that deliver these assurances. One key requirement is to enable multi-tenancy.