This document discusses strategies for maximizing the success of partnerships between pharmaceutical/biotech companies (sponsors) and contract research organizations (CROs). It notes that while outsourcing is growing, productivity remains a challenge as the number of new drugs reaching the market is flat. True partnerships between sponsors and CROs are needed to drive gains in productivity. Critical factors for successful partnerships include having senior-level strategic involvement rather than procurement-driven, encouraging information sharing between multiple partners, and sponsors providing long-term visibility of objectives.