This document introduces a strategy+business Reader titled "Sourcing Reloaded: Targeting Procurement's New Strategic Agenda". The Reader contains 14 chapters written by experts from Booz & Company addressing the latest ideas and trends in procurement. Topics covered include reinventing procurement to drive growth, developing win-win relationships with suppliers, the evolving role of the chief procurement officer, efficient sourcing in marketing, green sourcing, collaboration in supply chains, and optimizing global sourcing strategies. The introduction argues that procurement has become a strategic function that can influence half or more of companies' annual budgets. It presents four rules for successfully transforming procurement: start with high-impact areas, create transparency, collaborate widely,