This document discusses integration strategies for independent software vendors (ISVs) looking to achieve success in the cloud. It outlines three main integration strategies: offering an API only, employing an integration-as-a-service solution, or offering professional services. It recommends employing an integration-as-a-service solution like Boomi's AtomSphere platform to facilitate scalable and cost-effective integration for customers in a self-service model. Key criteria for selecting an integration-as-a-service partner include breadth of connectivity, self-service capabilities, one-to-many scalability, and embeddable and reusable integration processes.