Since public-private partnerships range from infrastructure endeavors to a provision of a public good or service the particulars of the decision making process differ vastly depending on the more detail oriented and cost specific an analyst becomes. Moreover many of these details may be very complex and may require the additional input of a technical expert who is experienced in similar projects. There are three different aspects that all public sector agencies must understand before constructing financial evaluation of the PCC. These three aspects are an understanding of the discount rate, an understanding of the risks, and an understanding of the costs.