Software-as-a-service (SaaS)-based business applications promise fast time-to-deploy and an agile, iterative approach for achieving business results. But try-and-buy, under-the-radar, self-provisioning, and incremental rollouts lead to fragmented solutions, which can kill ROI. Fragmented user experiences, siloed data, and breaks in business process flow hurt business value. This report surveys the state of SaaS implementation and integration and identifies best practices for fixing common issues for AD&D pros. This is an update of a previously published report; Forrester reviews and updates it periodically for continued relevance and accuracy.