Strategic Sourcing GuideDecisions. Evidence. Leverage.
Strategy & process

Reduce duplication without creating fragility

Compare the economics of removing suppliers with migration cost, lost capability and concentrated risk.

Strategic Sourcing GuideReviewed 4 October 2026Independent buyer guidance
Buyer principle

Fewer suppliers is an outcome to evaluate, not a target to pursue blindly.

Map capability, usage and obligations together

15 / Rationalization decision lens
High overlap · low dependency

Test retirement first

Validate users, obligations and a safe closure route.

High overlap · high dependency

Plan migration

Fund transition before counting avoided spend.

Low overlap · high value

Retain deliberately

Protect useful specialist capability.

Low usage · uncertain value

Investigate

Find the owner before treating low use as waste.

Start with business capabilities rather than brand names. Two products can look redundant while serving different populations, regulatory requirements or integration needs. Conversely, different category labels can hide the same capability purchased twice.

Combine usage, ownership, total cost, contract dates and dependencies. A low-use application may still be critical to a small specialist team. Require a business owner to validate retirement candidates.

Calculate the cost of simplification

Rationalization business case
ComponentInclude
Avoidable future spendOnly charges that can actually be stopped, at the relevant date.
Migration costData, integrations, training, process change and supplier assistance.
OverlapConcurrent contracts and the time needed for a safe cutover.
Replacement costNew modules, increased tiers, support and consumption.
RiskConcentration, resilience, capability loss and reversibility.

Show the timing of costs and benefits. Do not count a cancellation as savings if a non-cancellable commitment remains payable. Distinguish benefits from better utilization, negotiated rates and supplier retirement to avoid double counting.

Sequence by reversibility

Retire unused and low-dependency items first where permitted. Use renewals to align migrations rather than forcing every application onto a common date. Test the replacement with the affected users and preserve a rollback route for critical work.

A strategic platform can simplify integration and governance, but it can also concentrate commercial leverage in one supplier. Assess the underlying infrastructure and subcontractors: using two applications may not create resilience if both depend on the same service.

Require an actual retirement plan

  • Name the capability owner and receiving system.
  • Confirm data retention, access and export needs.
  • Fund the migration and user change.
  • Validate contract obligations and notice procedure.
  • Verify retirement and stop avoidable billing.

Original buyer guidance and illustrative examples. See our editorial approach for scope, evidence standards and limitations.

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