The document discusses strategies for adopting SOA at the project, departmental, and enterprise levels. It describes how a project-driven approach can provide some cost savings and tactical agility in the short-term but is limited in reuse potential and does not achieve the full benefits of SOA. An enterprise-driven approach requires more upfront effort but reduces long-term governance costs and better enables benefits like reuse across departments through the creation of a shared services portfolio. The key is to move beyond delivering services just for individual projects and instead architect services to be reusable assets.