Procurement Analysis Methodology
This section documents the analytical methods EXOS runs, written as methods rather than as product pages. Each entry states the question the method answers, the evidence it requires, the arithmetic it performs, the accuracy that can be expected of it and the cases where it does not apply. Where a method is executed in the platform, the scenario chain that performs it is named at the end of the page — the method itself is independent of the software and can be run on paper.
Methods are organised by the unit they operate on. A method that tests one supplier quotation is a different instrument from one that ranks a category portfolio, and applying either in place of the other produces a confident answer to a question nobody asked. Where a method has a lighter and a heavier form — cost decomposition and should-cost analysis, for example — the distinction and the order in which to run them is stated in the page itself.
Each page carries its evidence section, including what could not be sourced. Figures that circulate without a traceable origin are named as such rather than repeated.
A supplier citing inflation is making a claim about their own cost structure. The method that decomposes that claim into the share the indices justify.
Concentration risk is measured before signature, not after failure. How to test whether an alternative is real, and meet the DORA pre-contractual duty.
A specification is a commercial decision. Its largest cost is usually the suppliers eliminated before the tender exists, not the premium on the part.
Why step count and supplier power set the limit on autonomous AI in Strategic and Bottleneck procurement, with sourced step-count and reliability figures.
Why automated negotiation succeeds in low-power, tail-spend categories and what changes when supplier power is high, with sourced 2024–2026 evidence.
Practical questions
P2P, ERP, intake, sourcing and spend analytics tools execute or record decisions. Negotiation preparation models alternatives before award.
Test a supplier price increase in minutes: weight each cost element by its index change and compare the result with the increase asked.
Compare supplier offers on three-year total cost of ownership: escalation, implementation, internal effort and exit, not unit price alone.
How to prepare a high-value contract renewal: usage, price history, switching cost and a walk-away position, modelled before talks.
Building a BATNA when no direct alternative supplier exists: demand, specification, second source and contract structure as levers.
Measure single-supplier dependency by margin at risk and recovery time, then compare mitigation options by cost, speed and effect.