Procurement tools applied to negotiation: Kraljic matrix (HBR, 1983), total cost of ownership, target costing, auctions, SRM; work by P. Kraljic, A. van Weele, R. Monczka.
Full detail in the “Origin & history” section below.
306
Multi-Sourcing and Dual-Sourcing
Procurement & supply chainTechnique 306 / 360
Author of the library
Alexandre Baumberger
Negotiation lecturer at KEDGE Business School
A rare threefold background serving negotiation: teaching, commercial justice and audit, backed by experience as a company director in Bordeaux.
Teaching, KEDGE Business SchoolNegotiation lecturer since 2014 (12 years).
Commercial justice, Commercial CourtJudge from 2018 to 2026: litigation, then insolvency proceedings.
Audit & advisory, over 20 yearsTax, employment and financial audit in major firms, for large groups.
Multi-sourcing (several suppliers) and dual-sourcing (two suppliers) consist in deliberately splitting the purchasing volumes of a single item across several sources in order to reduce dependency and preserve a favourable balance of power. By maintaining a credible, activable alternative, the buyer retains a permanent negotiating lever: the supplier knows that a share of the volume can shift to a competitor. It is as much a resilience strategy (continuity in the event of disruption) as a negotiating tactic (price pressure through sustained competition). Its downside is a management overhead, a dilution of volumes and a shallower partnership.
Indicative profile: it situates the “Procurement & supply chain” family as the Procurement & Supply Chain school practises it, not this technique taken in isolation. Techniques from the same family and school therefore share the same profile. NEGOCOACH editorial rating out of 10, non-experimental · the higher the “relational risk” value, the more costly the technique is to the relationship.
NEGOCOACH assessment
How to read this rating
Tactical potential 5.7/10 (effectiveness, impact, discretion) and vigilance low (relational and ethical risk): two distinct readings, deliberately never merged into a single score that would reward risk. NEGOCOACH editorial rating calibrated from the “Procurement & supply chain” family and the “Procurement & Supply Chain” school. Each criterion is rated out of 10; click to understand what it measures.
Effectiveness8/10 · Very high
How far the technique can carry the negotiation in the intended direction when it is well executed.
Psychological impact5/10 · Moderate
Strength of the effect produced on the counterpart's perceptions, emotions and decisions.
Discretion4/10 · Moderate
How hard it is for the other party to notice the technique is being used. A high value = very discreet.
Preparation9/10 · Very high
The information, analysis and rehearsal required upfront to use it effectively.
Relational risk3/10 · Low
Potential cost to the relationship and to trust if the technique is spotted, refused or fails. A high value = riskier.
Ethics8/10 · Very high
Moral acceptability: fairness, transparency and respect for the counterpart's autonomy. A high value = more defensible.
Level of evidence
Documented school
The school this technique stems from is documented by recognised work and established practice, without experimental consensus. This indicator qualifies the school, not this technique taken in isolation.
Indicative NEGOCOACH editorial rating, for teaching purposes. For “Relational risk”, a high value signals a cost to the relationship, not a quality.
Overview of Multi-Sourcing and Dual-Sourcing
Origins and history
The practice is long-standing in industrial purchasing, but its theorisation dates from the 1980s. Peter Kraljic, in 'Purchasing Must Become Supply Management' (Harvard Business Review, 1983), sets out the matrix linking the level of supply risk to the choice between single and multiple sourcing. In 1988, Mark Treleven and Sharon Schweikhart published 'A Risk/Benefit Analysis of Sourcing Strategies: Single vs. Multiple Sourcing' in the Journal of Operations Management, one of the first works to formalise the cost/benefit trade-off. The operations research literature (notably Christopher Tang, 2006, on supply chain agility and risk management) then consolidated dual-sourcing as a lever of flexibility and resilience, distinct from the Japanese 'single sourcing' approach (Toyota, keiretsu) which, on the contrary, favoured a single partnership source.
Definition and principle
Multi-sourcing is a supply strategy consisting in qualifying and working simultaneously with several suppliers on a single category or item, splitting the volumes according to an allocation key (e.g. 60/40, 70/20/10). Dual-sourcing is its minimal two-source form. The operating principle: one never concentrates 100% of a critical purchase on a single supplier; one maintains at least one alternative that is qualified, approved and able to ramp up quickly. This alternative is not merely a logistical plan B: it is a negotiating instrument, because the mere existence of an activable BATNA (the shifting of volume) disciplines the price, quality and responsiveness of the main supplier. The split may be fixed or dynamic (reallocated at each tender or according to performance).
Objectives of the technique
Reduce dependency on a single supplier and secure continuity of supply (disruption, bankruptcy, strike, disaster, geopolitics)
Preserve a permanent negotiating lever by sustaining genuine, activable competition over volumes
Continuously compare price, quality and service through internal benchmarking between sources
Absorb demand peaks and smooth capacity by spreading the load
Reduce exposure to price, regulatory or currency risk by diversifying origins
Concrete examples of application
Application by context
The same technique, across every negotiation settings
A sales director qualifies two competing distributors in a single territory and adjusts the volumes according to their performance, which prevents either of them from dictating its commercial terms.
Context 2 / 8
Procurement negotiation
The buyer allocates 70% of a strategic item to the incumbent and 20-10% to a second approved supplier, then reshuffles the cards at each negotiation cycle to drive the price down.
Context 3 / 8
Labour negotiation
In collective bargaining, management avoids depending on a single union counterpart by engaging with several representative organisations, preserving its room for manoeuvre without being boxed in by a single channel.
Context 4 / 8
Crisis management
Faced with a sudden disruption (pandemic, port blockage), a company already operating dual-sourcing shifts its volumes to the pre-qualified secondary source and keeps its production running when single-sourced firms are at a standstill.
Context 5 / 8
Political negotiation
A state secures its energy or its vaccines by contracting with several countries/suppliers rather than a single one, reducing geopolitical blackmail and keeping a price lever.
Context 6 / 8
Real-estate negotiation
A developer consults and obtains quotes from several structural-works contractors in parallel, keeping two offers live until the last moment to maintain pressure on price and lead times.
Context 7 / 8
Cross-cultural negotiation
A group negotiating in Asia diversifies its suppliers across several countries (China, Vietnam, India) so as not to become captive to a partner playing on local relationship codes to lock in the relationship.
Context 8 / 8
Family negotiation
In an inheritance or division of assets, a party avoids depending on a single expert or notary by seeking a second opinion, which rebalances the balance of power and secures its decision.
Counter-techniques
Spot and neutralise this technique
Negotiation is also played on defence. Here is how to recognise this technique when it is used against you, and turn it around.
Detect
The signals that give it away
A sudden imbalance in the exchange
Pressure to decide quickly
An argument you cannot verify
Neutralise
The counters that defuse it
Slow down and reformulate
Ask for facts and sources
Concede nothing without a counterpart
Turn around
Turn it into an advantage
Name the manoeuvre: said out loud, a technique loses most of its power.
The trap to avoid
Reacting emotionally instead of coming back to the facts.
Strengths and weaknesses
Strengths: strong reduction in disruption risk and dependency; permanent negotiating lever through sustained competition; continuous quality/price benchmarking; flexibility to absorb peaks and contingencies; geopolitical and regulatory resilience. Weaknesses: management overhead (dual qualification, audits, contracts, monitoring); loss of economies of scale and volume discounts; shallower partnership and shared innovation; potentially less consistent quality between sources; risk of suppliers disengaging once they know they are secondary; increased logistical and administrative complexity.
When to use this technique?
To be favoured for strategic categories or those with a high supply risk (Kraljic matrix: leverage and bottleneck items), when disruption is costly, when the supplier market is concentrated or volatile, in an unstable geopolitical context, or when one wishes to restore a balance of power against a dominant supplier. To be avoided for highly specific bespoke components, volumes too small to interest two sources, or when an exclusive innovation partnership creates more value than putting suppliers in competition.
Famous cases
Company · Toyota and the Aisin shock (1997), Toyota, long a proponent of single-source partnership sourcing, depended on the Aisin Seiki plant for brake valves (P-valve). A fire destroyed the plant on 1 February 1997, halting almost all Toyota production. The supplier network improvised a recovery within a few days, but the episode became a worldwide textbook case illustrating the extreme risk of single-sourcing a critical part and fuelled the debate on the need for qualified alternative sources, even among lean advocates.
Company · Post-Covid diversification by principals, From 2020-2021, many manufacturers (electronics, automotive, healthcare) exposed to component shortages and the closure of Asian plants formalised dual/multi-sourcing and 'China+1' strategies, qualifying a second supplier in another geographical zone. The aim was twofold: to secure continuity and to recover a negotiating lever against suppliers in a position of strength during the shortage. A representative scenario widely documented by consultancies and the specialist purchasing press.
Common mistakes
Keeping a secondary source 'on paper' that is not genuinely qualified nor able to ramp up: the threat is not credible and the lever collapses
Splitting the volumes too unevenly (95/5), which creates no real competition and leaves the incumbent dominant
Underestimating the total additional cost (audits, stocks, management) and destroying value for a marginal risk
Neglecting quality and consistency between sources, generating non-conformities and hidden costs
Using the threat of shifting volume too aggressively or as a bluff, which demotivates suppliers and damages the long-term relationship
How to recognise and counter this technique
On the supplier side, the technique is recognised when the buyer insists on the existence of 'other sources', breaks the volumes into lots, or refuses any exclusive commitment. To defend against it: check whether the alternative is real and activable (switching costs, requalification lead times, effective capacity) or whether it is a bluff; make yourself hard to substitute by creating switching costs (specific know-how, co-development, integration, intellectual property, dedicated tooling); propose an exclusive value-added partnership (innovation, exclusivity, capacity commitment) that makes the single source more profitable than dispersion; document the real cost of fragmentation for the buyer (loss of volume discount, complexity). The classic antidote to dual-sourcing is well-sold 'single-source partnership'.
Limits and ethics
Limits: multi-sourcing has a complexity cost that can exceed the resilience benefit on non-critical categories; it fragments volumes and weakens innovation partnerships; it does not protect against a common systemic risk (two suppliers depending on the same subcontractor or the same geographical zone = false diversification). Ethics: sustaining competition is legitimate, but organising a sham competitive process, extracting price information to play one supplier off against another, or requesting quotes with no real intention of awarding, amount to unfair practices. Transparency about the nature of the consultation and respect for the confidentiality of competing offers are the safeguards.
Variants and related techniques
Variants: single sourcing (a single source by choice), sole sourcing (a single source by market constraint), dual-sourcing (two sources), multi-sourcing (more than two), 'China+1' / near-shoring strategy (geographical diversification), 'primary/backup supplier' (main supplier + fallback), split-award in tenders (award in lots). Related techniques: Kraljic matrix (purchasing segmentation), BATNA/MESO analysis (the credible alternative), competitive tendering and reverse auctions, lotting, second-source clauses in public procurement, supplier risk management and continuity plans.
Going further
Peter Kraljic, 'Purchasing Must Become Supply Management', Harvard Business Review, 1983 (purchasing segmentation matrix)
Roger Perrotin & Jean-Michel Loubère, 'Nouvelles stratégies d'achat', Éditions d'Organisation (negotiation and sourcing methods)
CIPS (Chartered Institute of Procurement & Supply), practical guides on single vs multiple sourcing and supplier risk management
Christopher S. Tang, 'Perspectives in Supply Chain Risk Management', International Journal of Production Economics, 2006
Scientific foundations
Peter Kraljic (1983) Purchasing Must Become Supply Management Harvard Business Review, 61(5), 109-117
Mark R. Treleven & Sharon Bergman Schweikhart (1988) A Risk/Benefit Analysis of Sourcing Strategies: Single vs. Multiple Sourcing Journal of Operations Management, 7(4), 93-114
Christopher S. Tang (2006) Perspectives in Supply Chain Risk Management International Journal of Production Economics, 103(2), 451-488
Quick exercise
Test yourself before answering
Answer in your head, then reveal the solution. Memory is built through active recall.
1Quels signaux doivent vous alerter ?
A sudden imbalance in the exchange
Pressure to decide quickly
An argument you cannot verify
2Quelles parades appliquer ?
Slow down and reformulate
Ask for facts and sources
Concede nothing without a counterpart
Frequently asked questions
The questions we get most
What is the "Multi-Sourcing and Dual-Sourcing" technique?
Multi-sourcing (several suppliers) and dual-sourcing (two suppliers) consist in deliberately splitting the purchasing volumes of a single item across several sources in order to reduce dependency and preserve a favourable balance of power. By maintaining a credible, activable alternative, the buyer retains a permanent negotiating lever: the supplier knows that a share of the volume can shift to a competitor. It is as much a resilience strategy (continuity in the event of disruption) as a negotiating tactic (price pressure through sustained competition). Its downside is a management overhead, a dilution of volumes and a shallower partnership.
Is the "Multi-Sourcing and Dual-Sourcing" technique ethical?
Yes. Used in good faith it stays within a fair negotiation: it structures the exchange without deceiving the other party. Being transparent about your intentions strengthens the long-term relationship.
How do you defend against "Multi-Sourcing and Dual-Sourcing"?
Reacting emotionally instead of coming back to the facts. The right reflex: slow down and reformulate.
What is the "Multi-Sourcing and Dual-Sourcing" technique based on?
NEGOCOACH does not assess the experimental validation of this technique in isolation. What we document is the grounding of its source school (Procurement & Supply Chain): documented school. Full detail is in the "At a glance" section of this page.
Practise with AI
Three ready-to-use prompts
Copy, paste into your assistant, replace the [brackets]. Works with ChatGPT, Claude, Gemini, Mistral, Perplexity.
Prepare
Build your plan before the meeting
You are an expert negotiation coach. Help me prepare to use the "Multi-Sourcing and Dual-Sourcing" technique in the following situation: [describe your situation]. Give me: the conditions for success, a 3-step script, my counterpart's likely objections and how to answer them.
Play the role of my counterpart in a negotiation. I am going to test the "Multi-Sourcing and Dual-Sourcing" technique. React realistically and with resistance, do not give in too quickly, then at the end analyse my performance and suggest 3 concrete improvements.
Here is how my negotiation went: [paste the exchanges]. Analyse whether the "Multi-Sourcing and Dual-Sourcing" technique was used well, what worked, the mistakes made, and spell out precisely what I could have done better.
Founding works of the 🛒 Procurement & Supply Chain school this technique belongs to.
Purchasing Must Become Supply Management (Harvard Business Review)
Article
P. Kraljic · 1983
Purchasing and Supply Chain Management
Book
A. J. van Weele · 2018
Purchasing and Supply Chain Management
Book
R. M. Monczka et al. · 2015
Category Management in Purchasing
Book
J. O'Brien · 2019
Procurement tools applied to negotiation: Kraljic matrix (HBR, 1983), total cost of ownership, target costing, auctions, SRM; work by P. Kraljic, A. van Weele, R. Monczka.
The author
Author
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See the technique in action
Videos to picture Multi-Sourcing and Dual-Sourcing and anchor it through examples.
Multi-sourcing (several suppliers) and dual-sourcing (two suppliers) consist in deliberately splitting the purchasing volumes of a single item across several sources in order to reduce dependency and preserve a favourable balance of power. By maintaining a credible, activable alternative, the buyer retains a permanent negotiating lever: the supplier knows that a share of the volume can shift to a competitor. It is as much a resilience strategy (continuity in the event of disruption) as a negotiating tactic (price pressure through sustained competition). Its downside is a management overhead, a dilution of volumes and a shallower partnership.
The right reflex
Name the manoeuvre: said out loud, a technique loses most of its power.
Never do this
Reacting emotionally instead of coming back to the facts.
5.7/10 tactical potential Low vigilance Documented school
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