Critical Chain

an innovative method for

project management

THE mEthod

Dare to finish all your projects on time!



This approach based on the Theory of Constraints (TOC) answers 2 recurring questions:

How to finish your projects on time, within budget,  fulfiling the initial scope?

How to accelerate projects (new product developments, non-repetitive productions, software development,  construction, …)?

The fundamentals of the approach

Protect the project against uncertainties with the project buffer and make sure to finish all projects on time

Do projects faster



in projects duration*

Manage project execution using the Fever Chart to set priorities and improve synchronisation on a daily basis

Finish more projects



of projects completed per time period*

Improve multi-project portfolio management and anticipate resource conflicts

Optimized output



of throughput*

*Source : “Advanced Multi-Project Management” - 2013 - Book by Gerald I. Kendall & Kathleen M. Austin, p. 95

This diagram helps you understand this simple method:

In traditional planning, finishing late is almost inevitable…



…and yet each task encompasses its own margin to deal with uncertainty and overloads.


The Critical Chain aims at mutualizing the margins and challenging cycle times. The buffer absorbs any delays and protects against uncertainty.

They apply the method

and have achieved remarkable results

ABS Jets
Teledyne e2v

Latest news

Critical Chain 2024 Conference

The Critical Chain Conference, organized by TOCICO (Theory Of Constraints International Certification Organization), will be held virtually on April 17th and 18th. More than 25 speakers will participate and share their knowledge through presentations. We invite you to discover how hundreds of organizations use this method to successfully complete their projects efficiently, on time and within budget, without sacrificing quality or content, and with the same resources. The Critical Chain Conference is the event for everyone interested in project management through this method, offering a unique opportunity to meet and learn from experts in the field.


More details->


Online Course Chaine Critique

Discover our new online Critical Chain Project Management course! Marris Consulting offers online training for anyone aiming to complete projects on time, faster while staying within their objectives and budgets. Learn how to effectively manage and plan projects using the Critical Chain Project Management approach, and benefit from our successful experiences across numerous projects.


Learn more->

Our videos about Critical Chain Project Management

Discover the approach or improve your knowledge with our training videos, conferences and expert discussions, concrete case studies, and controversial questions

Do you need help to complete all your projects on time?


Learn about the Theory Of Constraints and CCPM basics and discover the method of our experts to implement the Critical Chain approach within your company.


> Already 6 000 people trained

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Our experts carry out an analysis of your company in 48 hours and present you a status report and a pragmatic action plan.

(half the companies implement the actions without additional assistance).


> 10 to 15 diagnoses per year

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