Too many infrastructure and operations (I&O) leaders still think of cloud as a way to cut costs. Cloud is often cheaper, but its biggest impact is on your organization's speed and ability to flex to customer demands. This report gives I&O pros the tools to make the right business case for cloud, including how to match apps with their optimal cloud deployment options and which elements to include in the model. This is an update of a previously published report; Forrester reviews and revises it periodically for continued relevance and accuracy. We're updating it now to incorporate new research and new developments in platform-as-a-service (PaaS) and containers.