The following figure5 sets out the key stages in developing a major construction or service delivery project. The two-stage Cabinet approval process is a Cabinet requirement and applies to large capital projects of all departments and Crown agents (as defined in the Crown Entities Act 2004). The remaining chapters of this guide contain a detailed discussion of the individual stages as they apply to PPPs:
Figure 1: Major Stages in Developing a PPP Project

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5 Adapted from the Infrastructure Australia "Volume 2: Practitioners' Guide" p.5. See http://www.infrastructureaustralia.gov.au/public_private_partnership_policy_guidelines.aspx