Introduction to Critical Chain Project Management

Welcome to my introduction to Critical Chain Project Management (CCPM)!

Critical Chain Project Management is a “new” approach to Project Management, with connections to the Theory of Constraints.

While in the 1980s the production management changed from mainly local unit cost control to a holistic approach that encourages flow (Lean), the project management has not significantly changed* since the introduction of the Critical Path Method  in the 1950s (PERT: USA 1954 Polaris program) and despite its recognized weaknesses regarding reliability and meeting deadlines.

*Agile, Lean IT have brought improvements but the Critical Path Method is still the main model.

In the 1990s, Eli Goldratt, author of the famous business novel the Goal, revisited project management with a Theory of Constraints point of view.

In short, he proposed to shift from a task-focused management to a resources-focused management, taking into account their availability and capacity conflicts. To distinguish the new Critical Path from the previous one, he called it the Critical Chain.

The Critical Chain is the longest path taking into account the resources load levelling.

Critical Chain Project Management (CCPM) reviews also how tasks durations are estimated and proposes to set up a global buffer to protect the project achievement on due date instead of protecting every single task.

Here is a brief overview introducing CCPM


another one:

Here is a second video that gets you a bit deeper into CCPM concept

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