Explanation:

Types of Public-Private Partnership (PPP)-

Build-Operate-Transfer (BOT)
The toll road construction projects are illustrated under this conventional model. The private company construct the road, collect toll or revenue (for the contract period) and then pass its possession to the government.

Build-Own-Operate (BOO)
It is though very similar to the BOT model; here, the possession of the facility remains with the private entity itself.

Build-Own-Operate-Transfer (BOOT)
To recover the cost of construction and incur gains, the private firm, after development, keeps the possession of the facility up to the contract period. After which it passes on the ownership to the public sector.

Build-Lease-Operate-Transfer (BLOT)
The private company uses a leased public property to develop a facility. It functions on this property for the lease period to recover cost and earn revenue. Later as the lease expires, the land is handed over, back to the government.

Design-Build (DB)
This is the basic form of P3 where the private company layouts and constructs the facility as per the government requirements, after complete risk assessment. In return, it takes a fixed amount as its charges.

Design-Build-Finance (DBF)
The private sector firm undertakes a project to design the layout, build the facility and meet the capital cost involved in such designing and construction.

Design-Build-Finance-Maintain (DBFM)
This model can also be termed as a management contract. Here, the public sector entity remains associated with the project from the beginning to the end.

The process starts right from designing of the layout, to construction, funding and lifetime maintenance of the facility. The firm either charges a fixed sum or shares profit; also, it is involved in the project’s managerial decision making.

Design-Build-Finance-Maintain-Operate (DBFMO)
It is an extended version of DBFO. Here, the private firm prepares the blueprint, builds up the facility, invest the required sum and carry out the operations to generate revenue. Since the company undertakes the project for a long-term, it has to take care of the maintenance work too.

Design-Construct-Maintain-Finance (DCMF)
In the DCMF model, the private entity understands the government specifications and accordingly designs, develops, upkeeps and invest in a facility. This facility is then leased out to the government body itself.

Operation and Maintenance(O&M)
This model involves assigning of a sub-contract to the private companies for running and up keeping a facility.