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Theory of Constraints (TOC)
Definition
The Theory of Constraints (TOC) is a management philosophy developed by Eliyahu M. Goldratt that proposes every organizational system is limited by a relatively small number of constraints that determine overall performance. Improving areas that are not constrained often produces little meaningful impact because the system can perform only as well as its primary limiting factor.
The methodology follows five continuous improvement steps: identify the system's primary constraint, maximize its performance using existing resources, align all other activities to support that constraint, increase the constraint's capacity where appropriate, and repeat the process once the original constraint has been resolved.
Constraints may involve production capacity, decision-making, technology, regulation, market demand, specialized expertise, or organizational processes. They frequently change over time as improvements are implemented.
Why It Matters
Organizations often attempt to improve every part of the business simultaneously, dispersing effort without addressing the true source of limited performance. The Theory of Constraints improves operational efficiency, resource allocation, and strategic execution by concentrating improvement efforts where they produce the greatest organizational impact.