Concessions, Build-Operate-Transfer (BOT) Projects, and Design-Build-Operate (DBO) Projects are types of public-private partnerships that are output focused. BOT and DBO projects typically involve significant design and construction as well as long term operations, for new build (greenfield) or projects involving significant refurbishment and extension (brownfield). See below for definitions of each type of agreement, as well as key features and examples of each. This page also includes links to checklists, toolkits, and sector-specific PPP information.