Performance Based Logistics (PBL) is the preferred Department of Defense (DoD) product Support strategy to improve weapons system readiness by procuring performance, which capitalizes on integrated logistics chains and public/private partnerships. The cornerstone of PBL is the purchase of weapons system sustainment as an affordable, integrated package based on output measures such as weapons system availability, rather than input measures, such as parts and technical services. The Quadrennial Defense Review (QDR) and /the Defense Planning Guidance (DPG) directed the application of PBL to new and legacy weapons systems. PBL Implementation is also mandated by DoD Directive 5000.1, The Defense Acquisition System, May 12, 2003. This guide is a tool for Program Managers (PMs) and Product Support Managers (PSMs) as they design product support strategies for new programs or major modifications, or as they re-engineer product support strategies for existing fielded systems. It presents a method for implementing a PBL product support strategy. PBL delineates outcome performance goals of systems, ensures that responsibilities are assigned, provides incentives for attaining these goals, and facilitates the overall life cycle management of system reliability, supportability, and total owner ship costs. It is an integrated acquisition and logistics process for providing weapons system capability.