A project delivery method is a system used by an agency or owner for organizing and financing design, construction, operations, and maintenance services for a structure or facility by entering into legal agreements with one or more entities or parties. Types Common project delivery methods include: Design-Bid-Build (DBB) or Design-Award-Build (DAB) In Design-Bid-Build, owner develops contract documents with an architect or an engineer consisting of a set of blueprints and a detailed specification. Bids are solicited from contractors based on these documents; a contract is then awarded to the lowest responsive and responsible bidder. This is the traditional model for public sector infrastructure projects. DBB with Construction Management (DBB with CM) DBB with Construction Management is a modified version of the Design-bid-build approach With partially completed contract documents, an owner will hire a construction manager to act as an agent. As substantial portions of the documents are completed, the construction manager will solicit bids from suitable subcontractors. This allows construction to proceed more quickly and allows the owner to share some of the risk inherent in the project with the construction manager. Design-Build (DB) or Design-Construct (DC) In Design-Build, an owner develops a conceptual plan for a project, then solicits bids from joint ventures of architects and/or engineer and builders for the design and construction of the project. This is an alternative to the traditional model for public infrastructure projects that does not involve Private Financing. Design-Build-Operate-Maintain (DBOM) DBOM takes DB one step further by including the operations and maintenance of the completed project in the same original contract Integrated Project Delivery (IPD) Integrated Project Delivery seeks to involve all participants (people, systems, business structures and practices) through all phases of design, fabrication, and construction, with the goal of improving project efficiency and reducing "waste" in project delivery (i.e. any processes that do no directly add value to the final product). IPD is closely associated with the philosophy of Lean construction. Job Order Contracting (JOC) A form of Integrated Project Delivery (IPD) specifically for repair, renovation, maintenance, sustainability, and "minor" new construction. Each job order contract uses a Unit Price Book for pricing each job via a multi-year umbrella contract. Public-private partnership (PPP, 3P, or P3) A public–private partnership is a cooperative arrangement between one or more public entities (typically the owner) and another (typically private sector) entity to design, build, finance, and at times operate and maintain, the project