The document discusses Callidus On-Demand, a software-as-a-service (SaaS) solution for Callidus Software's sales performance management applications. It is run on Solaris On-Demand infrastructure from Sun Microsystems, which provides the hardware, software, storage, networking and managed operations. Customers benefit from lower costs, reduced IT burden, and Callidus and Sun handle deployment, hosting, support and upgrades rather than managing it themselves on-premise. Sun's Solaris operating environment, SPARC and x86 servers, storage solutions and managed services provide a reliable and secure platform for Callidus On-Demand.