Today's service complexity and sky-high end customer expectations mean that infrastructure and operations (I&O) teams must: 1) consolidate design across all infrastructure domains (silos) and 2) blend in application development to engineer magnificent customer experiences from an ample supply of technology options and sources. This new approach will marginalize some of today's niches while it spawns and cultivates new roles for I&O pros. This report offers Forrester's vision for transforming your infrastructure through service design. This is an update of a previously published report; Forrester reviews and revises it periodically for continued relevance and accuracy.