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Single Sourcing vs Multisourcing vs Sole Sourcing
Last revised date:
1 October 2026
Single sourcing, multisourcing and sole sourcing describe different supply situations. Understanding the distinction is essential because the choice influences leverage, collaboration, continuity and supply risk.
Single Sourcing vs Multisourcing vs Sole Sourcing
CSCP distinguishes the number of suppliers chosen by management from situations where the market itself offers only one source.
Why it matters
The sourcing structure affects supplier leverage, relationship depth and exposure to disruption. A deliberate single-source choice is different from having no alternative source available.
Core concepts
A single-source supplier is selected to receive 100 percent of a requirement even though alternatives may exist.
Multisourcing purchases a good or service from more than one independent supplier.
Sole sourcing exists when only one organization can supply the required good or service.
Single sourcing can support deeper relationships, concentration of spend and supplier development.
Multisourcing can provide alternatives and reduce dependency but can dilute spend and increase coordination complexity.
Sole sourcing creates dependency because alternatives are unavailable or impractical.
The sourcing structure should reflect capability, total cost, resilience and strategic relationship objectives.
Exam focus: Single source is a choice; sole source is a supply-market condition.
Remember for the exam
Single source is a choice; sole source is a supply-market condition.
Multisourcing uses more than one independent supplier.
Sourcing structure affects both leverage and risk.
There is no universally best sourcing structure; context matters.
Apply it
Use this concept in a practical decision by asking: Single Sourcing vs Multisourcing vs Sole Sourcing
Then check the decision against this principle: CSCP distinguishes the number of suppliers chosen by management from situations where the market itself offers only one source.
Exam trap
Watch for questions that test this distinction or principle: CSCP distinguishes the number of suppliers chosen by management from situations where the market itself offers only one source.
Key takeaway
Single sourcing, multisourcing and sole sourcing describe different supply situations. Understanding the distinction is essential because the choice influences leverage, collaboration, continuity and supply risk.
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Cheat Sheet
Exam Focus
Single source is a choice; sole source is a supply-market condition.
Multisourcing uses more than one independent supplier.
Sourcing structure affects both leverage and risk.
There is no universally best sourcing structure; context matters.
Single Sourcing vs Multisourcing vs Sole Sourcing
Quotes of Wisdom
ASCM. (2026). CSCP Learning System, Version 5.4, Book 2 of 2, Module 6, Section B: Strategic Sourcing and Alliances.
Article Sources
Category:
SCOR Process:
Level:
Sourcing Strategy
Source, Orchestrate
Exam-Ready
Last Updated:
1 October 2026 at 22:06:08