Picture two directors appointed on the same day, at the same level, in the same company:
- Camille is promoted from within: twelve years with the company, she knows every corner of the organization,
- Nadia comes from outside: recruited after a six-month search, she doesn’t know anyone yet.
On paper, they are running the same race: same title, same mandate, same finish line at 18 months.
In reality, they aren’t running the same event at all.
- One is running at home, on a track she knows by heart, in front of a crowd that knows her by heart too.
- The other is running away from home, on a course for which she only has the map.
And here is the point almost every book and guide on taking up a new role ignores: the advice that will save one will trip up the other.
Two assets, two debts... perfectly symmetrical
It all becomes clear when you look at what each brings to the start line, and what each owes.
The internal promotee starts with an asset of knowledge, and an image debt.
Camille knows the culture, the decision-making channels, the people, the history of every file.
No course reconnaissance needed: she could run it with her eyes closed.
But everyone knows her too: in her former role.
Her image is already written:
“Camille is the technical expert”,
“Camille is the one from the projects team”...
Her transition is less about discovering the organization than about getting her own profile rewritten in everyone’s head. And an image built up over twelve years isn’t rewritten by an appointment announcement.
The external hire starts with an asset of legitimacy, and a knowledge debt.
Nadia benefits from what the internal promotee will never have: the presumption of competence.
“She was recruited for this”
Nobody knew her as an intern, nobody remembers her early mistakes, her authority is granted from the outset.
On the other hand, she knows nothing about what really matters: the unwritten rules, the historical sensitivities, the real reason her predecessor left, the names of the three people without whom nothing moves.
Her transition is an orienteering race on unknown terrain, and the maps she was given during recruitment describe the organization as it dreams of itself, not as it actually works.
Remember the symmetry, because it governs everything else:
- the internal promotee must win what the external hire already has (a fresh image),
- the external hire must acquire what the internal promotee already has (knowledge of the terrain).
Two opposite races, under the same name.
The internal promotee’s strategy: running your home track as if it were unknown
Make yourself be surprised again (deliberately!)
The internal promotee’s greatest danger is believing they already know.
Their knowledge of the organization dates from their former point of view: what a technical expert sees is not what a director sees.
Put yourself through the newcomer’s exercise: go round the one-on-one meetings again as if you were just arriving (people will tell you things they have never told you before: your role has changed, and so has what they say), and keep a notebook of surprises even if everything seems familiar.
The question to ask yourself every week:
“What do I take for granted here that I would check if I were arriving from outside?”
Organize the rewriting of your image.
It won’t happen on its own: without a deliberate effort, you will remain “so-and-so’s former colleague” for two years.
Three concrete levers:
> first actions that clearly belong to the new role and not the old one (resist the temptation to shine on your former area of expertise: it is a natural but counterproductive reflex)
> a visible change of rituals (the meetings you lead, the committees you sit on, the way you communicate)
> explicitly dealing with inherited relationships: former colleagues who now report to you, the disappointed candidate, complicities to renegotiate… which we discuss in another article in this series.
Ask for the support nobody will offer you.
This is the statistical blind spot: the vast majority of internal promotees receive no structured support, because the organization assumes they are “already onboarded”.
The exact opposite is true: the internal promotee faces the most delicate transition, a change of professional identity in front of witnesses. And with the least support.
Don’t wait for it to be offered: negotiate it at the time of your appointment, when your bargaining power is at its highest. A sponsor, formal checkpoints, Leadership Transition Coaching: these aren’t favours, they are racing equipment.
The external hire’s strategy: reconnoitre the course before attacking
Decode before you transform.
Trail runners never set off on a course they haven’t reconnoitred: they study the route, the elevation, the technical sections.
Your equivalent: truly devote your first weeks to understanding how this organization works, not how it should work.
The external hire’s fatal trap has a name: graft rejection.
Applying the methods that brought you success elsewhere, on terrain whose codes you haven’t yet read, triggers a diffuse resistance that won’t show itself openly, but which is the leading cause of failure for external hires.
Recruit your local guides.
On an unknown course, savvy runners stick close to those who know the terrain.
In your first weeks, identify two or three “translators”: credible people with no obvious personal agenda, able to explain what the official documents don’t say: why a given project failed, what a given committee’s silence really means, whom to consult before touching what...
Measure out your difference
You were hired to bring something different: that is your legitimacy.
But that novelty is an asset to be spent gradually, not all at once.
The rule for runners who change clubs: first you adopt the group’s habits, and you only suggest your own training methods once the pack has accepted you.
In practice: in your first six months, every “where I was before, we did it like this” must be earned by three “help me understand how it works here”.
What doesn’t change, and the symmetrical trap at the end
Not everything is different, and most of the messages in this series of articles apply to both races:
> clarifying the real mandate (a misunderstood mandate hits internal and external hires equally hard),
> the three warning signs of the first month,
> the 30-60-90 plan extended with its three horizons,
> the real distance of the event: 18 months, not 100 days…
But there is one last symmetry, and it plays out precisely in that zone between months 6 and 18 where transitions are won or lost.
The internal promotee fails through too much continuity, the external hire through too much disruption.
- The internal promotee who hasn’t rewritten their image remains a prisoner of their former role: consulted as the expert they used to be, challenged as the leader they are now.
At 12 months, people will say they “never grew into the role”. - The external hire who hasn’t decoded the terrain piles up rejected grafts.
At 12 months, people will say they “never really understood the place”.
Two opposite recipes for failure, and the same DNF at the finish.
Hence the question that should come before all your plans, and that so few new leaders ask themselves:
“In my specific situation, at home or away, which debt do I need to pay back first?”
More questions about strategies for taking on a new role
Is an internal promotion easier to get right than an external hire?
Neither easier nor harder: different.
Studies of failed transitions show that both groups fail at comparable rates, but for opposite reasons: lack of a clean break for internal promotees, lack of integration for external hires.
What is true, however, is that internal promotees almost always receive less support, as the organization wrongly assumes their transition will take care of itself.
How long does it take an external manager to be fully operational?
Allow about 6 months to decode the organization and reach the break-even point: the moment when your contribution exceeds what your onboarding costs the company.
And 12 to 18 months to be fully settled in the role, with transformations under way and legitimacy established.
Organizations that demand structural results from an external hire before the sixth month are manufacturing the very failures they will later deplore.
What should the company do differently depending on whether the role is filled internally or externally?
For the most part, reverse its current reflexes.
- For external hires, companies often offer a factual onboarding path (premises, tools, org chart) when the person mostly needs cultural decoding: a credible sponsor, access to the unwritten stories, protection during their learning phase.
- For internal promotions, companies often offer nothing at all when the person needs the change of role to be marked symbolically: a clear announcement of the mandate, rites of passage, support with the relational transition with their former team.
In both cases: formal checkpoints at months 3, 6 and 12, not just during the probation period.
Is it better to favour internal promotions or external hires for leadership positions?
There is no universal answer: it depends on what the role demands.
Broadly speaking, continuity and detailed knowledge of the terrain argue for an internal candidate.
The need for deep transformation, or for skills the organization lacks, argues for an external one.
The real success factor isn’t the recruitment channel, but how clearly the organization sees the starting debt of the person chosen, and the support it puts in place to match.
