Software-as-a-service (SaaS) is an alternative worth considering for companies that face the high costs of enterprise-wide implementations and extensive reengineering efforts to enhance existing business processes. In particular, small companies often do not have the financial resources to purchase "on-premise" systems that require significant investment in packaged software and dedicated hardware. However, it is also true that large companies with extensive installations are beginning to consider SaaS as a cost-cutting measure.