| Stage in business change lifecycle | Establish business need | Develop business case | Develop procurement strategy | Competitive procurement | Let contract: develop solution | Manage contract; implement business changes | Closure |
| OGC Gateway™ review | OGC Gateway™ 0: Strategy assessment | OGC Gateway 1: Business justification | OGC Gateway™ 2: Procurement strategy | OGC Gateway™ 3: Investment decision | OGC Gateway™ 4: Readiness for service | OGC Gateway™ 5: Benefits evaluation | |
| Primary activities | Alert the market (if it exists) to potential requirement Take initial soundings on feasibility, capacity, capability, approach and level of interest |
Shape the requirement and contractual options Indicate likely business priorities/ CSFs Hear market's views of risks, solutions and approaches Judge level of interest |
Confirm realism of the requirement specification Determine most appropriate procurement and contract strategy |
Select feasible suppliers Evaluate supplier responses Choose the successful supplier |
Start the continuous assessment of the supplier as the solution is developed | Assess the (customer's and) supplier's strategic performance throughout the contract (as the business evolves and technology progresses) | Complete the continuous assessment of the supplier during termination and transition to replacement solution |
| If market does not exist, see Market Creation guidance | Establish, build and maintain relationship | ||||||
| Supplier assessment guidance documents | Early market engagement | Developing the evaluation strategy | Supplier assessment at the Selection Stage | Assessing the working relationship | |||
| Market sounding | Supplier assessment at the Award Stage | ||||||