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

Teledyne e2v
ABS Jets

Latest news

Critical Chain face-to-face advanced training


Next training sessions:

Paris, October 5th (Fr)





Critical Chain face-to-face initial training


Next training sessions:

Paris, October 4th, 2023 (Fr)


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->

Webinar Efrat Goldratt-Ashlag's Rules of Flow

More than 25 years ago, the initial description of Project Management through the Critical Chain was established. However, the landscape has evolved since then. The latest book by Efrat Goldratt-Ashlag, titled "Goldratt's Rules of Flow," published in January 2023, offers a fresh perspective on the subject. This book is now considered the essential first step to embark on your journey into the Critical Chain.

The webinar took place on 4th of July, if you missed it or would like to whatch it again:


Webinar Rules of Flow

Critical Chain 2023 Conference

Developing more new products faster in the aerospace industry through Critical Chain

More details

Webinar Capex projects & Critical Chain

On April 05,2022, Marris Consulting organized a webinar in English about Critical Chain applied to Capex & layout changes projects


To know more about this event

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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