G5 · Design and plan approved

Source

Stage-Gate®; PRINCE2® stage boundaries; ISO 21502 governance

Level

B · established practice

Evidence

Checks

• Top risks have owners and responses
• Forecast stated as a range, not a single date
• Critical path meets the fixed date with an explicit buffer; the fallback decision date is set
• Forecast at the agreed confidence meets the fixed date; fallback scope agreed

How the gate runs

Predictive

Phase gate: held once, at the end of the stage.

Agile (iterative)

Rolling gate: held per release; item readiness via Definition of Ready, completion via Definition of Done.

Flow (Kanban)

Policy gate: explicit exit policies on the board columns, applied to every item.

Hybrid

Phase gate per phase, with iterations or flow inside the phase.