A decision gate is part of a stage gate process. The decision gates are the interfaces between the stages. In its normal progression, the requirements of a project’s current stage are completed and presented for approval (i.e. decision). If approved, the project passes through the “Decision gate” and into the subsequent phase. The most well known decision gate has been given the name final investment decision (FID). It represents the transition from the “Define” stage to the “Execution” stage. Passing through this gate is also known as “Sanction”.