Compare methods

	Strategic Value Chain Analysis	VRIN/VRIO Resource Audit
Field	Strategic Management	Strategic Management
Family	Process / pipeline	Process / pipeline
Year of origin	1985	1991
Originator	Michael E. Porter	Jay B. Barney; Margaret A. Peteraf
Type	Activity-decomposition pipeline for competitive advantage	Resource-screening pipeline for sustained competitive advantage
Seminal source	Porter, M. E. (1985). Competitive Advantage: Creating and Sustaining Superior Performance. Free Press, New York. ISBN: 9780029250907	Barney, J. (1991). Firm Resources and Sustained Competitive Advantage. Journal of Management, 17(1), 99-120.
Aliases	Porter Value Chain Analysis, Value Chain Framework, Activity-Based Competitive Advantage Analysis, Value System Analysis	VRIO Analysis, VRIN Framework, Resource-Based Audit, Resource and Capability Audit
Related	4	4
Summary	Strategic value chain analysis disaggregates a firm into the discrete activities through which it designs, produces, markets, delivers, and supports its product, in order to locate the sources of cost advantage and differentiation that underlie competitive advantage. The framework is Michael Porter's, introduced in his 1985 Competitive Advantage, where he divides the firm's activities into five primary categories — inbound logistics, operations, outbound logistics, marketing and sales, and service — and four support categories — firm infrastructure, human resource management, technology development, and procurement — with margin as the difference between total value created and total cost. Porter argued that competitive advantage cannot be understood by looking at the firm as a whole but must be traced to the way particular activities are performed and linked. The analysis extends outward to the value system linking suppliers, the firm, channels, and buyers.	The VRIN/VRIO resource audit is the operational test of the resource-based view of the firm: it examines a firm's resources and capabilities to judge which of them can be a source of sustained competitive advantage. Jay Barney's 1991 article established the criteria — a resource must be Valuable, Rare, Imperfectly imitable, and Non-substitutable (VRIN) — and later restated them as the VRIO question set, adding whether the firm is Organized to exploit the resource. Margaret Peteraf's 1993 cornerstones paper gave the same logic an economic grounding through resource heterogeneity, ex post and ex ante limits to competition, and imperfect mobility. Together they shifted strategy's attention inward, arguing that durable advantage comes less from industry position than from idiosyncratic, hard-to-copy resources. The audit walks each resource through these tests to classify its competitive implications.