Build vs. buy in personnel development: What companies should build themselves and when external partners make sense

Companies are increasingly investing in the development of their employees.

Training programs are being designed, learning opportunities are being built, and new professional development formats are being created.

But with the growth of personnel development comes a crucial question:

What should we actually build ourselves, and when does external support make more sense?

Internal solutions often seem closer to the company's core. External partners, on the other hand, bring specialized knowledge, experience, and additional resources.

However, the decision betweenbuild and buyis not just a matter of cost.

What matters more is:

Which competencies need to be anchored in the company for the long term – and where does external expertise provide greater added value?

Those who answer this question strategically can deploy resources more effectively and make personnel development more impactful in the long run.

What does build vs. buy mean in personnel development?

Build vs. buy describes the decision to either develop services and competencies internally or to utilize external support.

Buildmeans, for example:

• developing your own learning content
• training internal instructors
• establishing mentoring programs
• systematically sharing internal knowledge

Buyin contrast, means specifically leveraging external expertise, for example through:

• external trainers and coaches
• specialized consulting
• existing learning programs
• external learning content or platforms

Both approaches have their merits.

The crucial question is therefore not:

"Build or buy?"

But rather:

"What should we be able to do ourselves – and where does external support make strategic sense?"

Why "doing everything yourself" isn't automatically better

No one knows your company culture, processes, and challenges as well as the people within the company itself.

That is why it initially seems sensible to handle as much staff development internally as possible.

However, internal implementation requires resources.

Content must be developed, training sessions organized, and learning offerings continuously updated.

Typical challenges include:

• lack of time
• lack of pedagogical experience
• high effort involved in content creation
• lack of specialized expertise
• dependency on individual knowledge holders

That is why the question should not just be:

"Can we do this in-house?"

But rather:

"Does it make strategic sense to commit our resources to this?"

When companies should build internal competencies

Internal expertise offers a decisive advantage, especially when it comes to company-specific knowledge.

This includes, for example:

• internal processes and workflows
• product and industry knowledge
• corporate culture and values
• specific working methods
• organization-specific roles

Furthermore, companies should not be entirely dependent on external partners in the long term for competencies that are critical to future success.

A key principle is therefore:

The more strategic and company-specific a competency is, the more important it is to build internal know-how.

However, this does not mean that companies have to manage this development entirely on their own.

When external partners make sense

External support can be particularly useful when specialized knowledge is required that is not yet available in-house.

For example, in cases of:

• new or complex subject areas
• leadership development
• specialized training
• didactic design
• setting up a corporate academy
• temporary capacity bottlenecks

External partners bring experience from a variety of projects and companies.

This allows them to introduce new perspectives, methods, and best practices, while accelerating development processes.

However, it is important to note:

External expertise should not permanently replace internal competence.

Ideally, it helps to build that very competence in a targeted way.

The most common misconception: viewing build and buy as opposites

Many companies treat build vs. buy as an either-or decision.

In practice, a combination of both approaches often makes more sense.

For example, a company can use external expertise to develop a learning strategy or a corporate academy.

At the same time, internal employees are empowered to independently develop these structures further later on.

Alternatively, external trainers can provide specialized knowledge while managers support the transfer into everyday work.

This creates a hybrid approach:

External expertise accelerates development. Internal competence ensures long-term impact.

That is often where the greatest added value lies.

5 questions for the right build-vs.-buy decision

Whether to work internally, externally, or with a hybrid approach depends on several factors.

Five questions to help you decide:

1. How strategically important is the competency?
Competencies that are closely linked to your business model or future competitive advantages should be anchored internally in the long term.

2. Is the required expertise already available?
If specialized knowledge is missing, external support can significantly accelerate the development process.

3. How frequently is the competency needed?
For ongoing needs, building internal competency is often more worthwhile than for one-off specialized topics.

4. What resources are available internally?
In addition to budget, you must also consider time, capacity, and existing know-how.

5. How quickly are results needed?
When development is needed on short notice, external expertise can help you become operational faster.

This ensures that "build vs. buy" decisions are based on actual strategic needs rather than gut feeling.

Why the best solution is often hybrid

Modern professional development does not have to be exclusively internal or external.

The key is finding the right combination.

For example, companies can:

• build strategically relevant knowledge internally
• leverage external expertise for specialized topics
• qualify internal trainers through external experts
• purchase existing learning resources and supplement them individually
• use external support for setup and take over the structures yourself later on

This allows companies to remain flexible without permanently outsourcing critical know-how.

The key point:

Not everything has to be created in-house. But important knowledge should remain within the company for the long term.

Conclusion: Build vs. buy is not an either-or decision

Companies do not have to develop every competency themselves.

And they should not permanently outsource every development task either.

The decisive factor is to make a conscious distinction:

Which competencies are so important for our long-term success that we must anchor them internally?

And:

Where do external expertise, experience, and speed create real added value?

Successful personnel development therefore often combines both approaches.

Internal know-how creates long-term competence. External expertise provides specialized knowledge, new perspectives, and speed.

Those who strategically combine both make sensible use of existing resources while simultaneously building the competencies the company will truly need in the future.

Would you like to build your personnel development strategically and find out which competencies you should develop internally and where external support makes sense?

We support you in building suitable learning and development structures, utilizing internal potential in a targeted manner, and deploying external expertise where it creates real added value.

Feel free to contact us for a non-binding consultation.

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