– An internal executive knows the company’s culture and challenges, but has not necessarily led a project of this kind.

– An interim manager brings direct experience of the same type of project, verified by the firm that puts them forward.

– ADN Transition draws on a pool of more than 5,000 interim managers. Each manager is selected by a partner, a former senior executive, who then supports them throughout the assignment.

When faced with a complex project, the first reflex is often to hand it to one of the company’s senior executives. They know its culture and challenges. Yet one question remains: have they ever led a project of this kind?

A manager who has already led an identical project knows three things that no amount of intelligence can replace:

1. The essential steps to go through.

2. The obstacles that will arise.

3. The mistakes not to make.

Luc Marot, President of ADN Transition, sums it up:

“A very intelligent senior executive who knows your culture perfectly can, despite all their qualities, lead you straight into a wall if they have never led this type of project.”

ERP (enterprise resource planning software) roll-outs are the most telling example. Many have failed in companies where every team was competent. What was missing was not intelligence, but the experience of having already taken an ERP project all the way through.

For Luc Marot, the key is twofold: the manager’s experience and the firm’s support.

“An interim manager who has already led this project, supported by a partner who is a former senior executive and understands the issue, is a guarantee of success.”

ADN Transition has a pool of more than 5,000 interim managers. In a network of this size, finding a profile is not enough: you have to find the one who has already led the project. Qualification is therefore never delegated:

– The partners constantly qualify the managers in the network.

– A partner personally chooses the manager placed on each assignment, checking that they have already led a project of the same kind.

– A partner supports the assignment, from scoping to success.

Luc Marot is President of ADN Transition. He has worked in interim management since 2005. He began his career as an auditor at Arthur Andersen, then served as CFO at McDonald’s, NRJ and Lagardère. Since September 2026, he has been a board member of France Transition.

Meet ADN Transition’s partners and senior advisors

– Interim management firm founded in 2013.

– A pool of more than 5,000 interim managers.

– 6 partners and 7 senior advisors, all former senior executives.

– Offices in Boulogne-Billancourt and Lyon.

– Values: high standards, availability and sincerity.

When should you call on an interim manager rather than an internal executive?

When the project is complex and no internal executive has already led a project of the same kind: ERP roll-out, transformation, reorganisation.

What does an interim manager bring that an internal executive does not?

Direct experience of the same type of project: they know the essential steps, the obstacles and the mistakes to avoid.

How does ADN Transition choose the interim manager?

From a pool of more than 5,000 managers, the firm’s partners, all former senior executives, qualify the profiles and choose the one who goes on assignment.

Is the interim manager supported during the assignment?

Yes. At ADN Transition, a partner supports every assignment, from scoping to success.

ERP roll-out, transformation, reorganisation: ADN Transition’s partners introduce you to an interim manager who has already led a project of the same kind, and support them through to the success of the assignment.

Let’s talk about your project