OQSI has developed many original procedures as well as drawn upon many existing standards and procedural norms from various organizations. These have included, for example, ISO, ECMA scripting standards as well as to the ISO process approach (ISO: 9000). We have also embedded in the OQSI due diligence guidelines changes that facilitate a more integrated and coherent application of operational procedures for project design such as OP 10.04 of the World Bank.
Currently, the main development has been the Due Diligence Design Procedure (3DP) based on a decision analysis approach to build a decision analysis model with which to simulate options and a range of critical analyses. 3DP runs with 100% oversight gained from a dedicated Real Time Audit (RTA) system which has global coverage.
The stages in the 3DP can be observed in the diagram below where the cycle is divided into a "Design" and an "Implementation & operations" phase. The 3DP only refers to design because the implementation and operational phases rely heavily on the depth of analysis completed during the design phase to optimize implementation and operations decision-making.