New November 02, 2026

The difference between outstaffing, outsourcing, and secondment simply explained

Learn the difference between outstaffing and outsourcing and discover when secondment, outsourcing, or outstaffing suits your IT capacity needs.

You want to scale up your IT capacity, but a vacancy remains unfilled or a new project requires extra people faster than you can hire. In that case, you will soon come across terms like outsourcing, secondment, and outstaffing. They sound similar, but in practice, they determine something very important: who manages the daily work?

The difference between outstaffing and outsourcing lies mainly in control. Do you want to purchase a complete end result, or do you want to add extra developers to your own team and stay at the helm yourself? Once you know that distinction, making a choice becomes a lot clearer.

The challenge: scaling IT capacity without losing control

For a start-up or SME, extra development capacity can suddenly become necessary. Perhaps a project is growing faster than expected, someone drops out temporarily, or a local vacancy remains open longer than planned. The solution seems simple: bring in external help. But the collaboration model determines how much you still organize yourself.

With one form, you primarily buy a result. With the other, you add someone to your existing workflow. That difference affects planning, communication, responsibility, and administrative burdens. Therefore, it is wise to first look at how you want to collaborate on a daily basis, before you just compare rates or CVs.

Those looking for more context on the broader capacity issue can also read how IT outstaffing structurally tackles the Dutch talent shortage.

What is outsourcing and when do you hand over the reins?

With outsourcing, you hand over a defined project, product, or process to an external party. This party generally takes responsibility for the execution and the agreed-upon end result. You discuss the assignment, goals, and progress, but the partner usually organizes who does the work and how it is distributed internally.

This can be pleasant if you do not want to or cannot organize internal IT management. For example, you buy a delivered system or a clearly defined part of a project. The downside is that you are less directly involved in daily priorities, work distribution, and the way the team collaborates.

The fundamental distinction can also be seen in this explanation about the differences between outsourcing and outstaffing: with outsourcing, the responsibility for the end product lies with the partner, while with outstaffing, hired employees can operationally participate in your team.

Outsourcing is therefore a good fit when you consciously want to purchase a complete result. Do you already have a product owner, technical lead, or development process in-house? Then a model with more daily control might fit better.

Outstaffing vs. secondment: the flexible workforce compared

Secondment and outstaffing are similar because in both cases you add extra people to your team. In both models, you can prioritize tasks yourself and involve the professional in your daily work. Yet, the agreements surrounding them often differ significantly.

Traditional secondment often focuses on local talent that becomes available through an agency. This can be a logical choice when physical presence is important. At the same time, recruitment, mediation, and contract terms can involve more time and fixed obligations. The exact conditions naturally vary per secondment agency and agreement.

Outstaffing focuses on adding external capacity to your own organization, without you having to put those people on your payroll yourself. You retain substantive control, while the supplier handles the employment relationship and the corresponding administration. For companies that want to scale IT capacity without setting up a large HR process, this can be a practical flexible workforce.

Model Daily control Where does the responsibility lie?
Outsourcing More on main lines With the external partner for the agreed result
Secondment With your team With you for daily management, with agreements via the secondment agency
Outstaffing With your team With you for the daily work, while the supplier manages the employment relationship

What exactly is outstaffing and how do you retain control?

What is outstaffing in practice? You hire external IT professionals who work as part of your team. You determine, together with your own team, what the priorities are, which tickets are picked up first, and how the collaboration goes. Thus, the developer does not have to be a separate external project team.

Imagine: you have a product team with a fixed schedule and daily alignment. An external developer can then join your Agile stand-ups, work from your backlog, and communicate via the channels you already use, such as Slack or Teams. This way, knowledge, decision-making, and daily direction remain with your organization.

The administrative side lies with the outstaffing partner. That can provide peace of mind when you do need extra capacity, but do not want to be personally responsible for payroll administration, sick leave, holiday pay, and other employer obligations. It is, however, wise to make clear agreements in advance about availability, handover, communication, and replacement.

At MantabOne, selected IT professionals from Indonesia are added to existing teams and Agile workflows. Clients pay for productive hours at fixed rates, without fixed payroll costs or obligations regarding sick leave and holiday pay. In case of absence, backup or replacement capacity is also available. This makes it possible to hire remote developers while keeping daily collaboration in your own hands.

Do you primarily want to understand how such an approach can contribute to operational peace? Then also read how IT outstaffing can help an SME office keep running smoothly.

Which form suits your situation?

The choice becomes easier if you start with one question: do you want to direct the work, or do you primarily want to buy a result?

  • Choose outsourcing when you want to outsource a clearly defined project and let the external partner organize the execution and delivery.
  • Look into secondment when locally available expertise or on-site presence is important for your situation and the contract type fits your planning.
  • Choose outstaffing when you need extra hands, want to determine the daily priorities yourself, and want to keep employer administration outside your own organization.

Especially if you already have a team, planning, and product responsibility, outstaffing can be a direct way to add capacity without redesigning your workflow. A team does not have to be large to benefit from this; the point is that management remains clear.

Conclusion: hiring remote developers with peace of mind

Outsourcing, secondment, and outstaffing each solve a different problem. Outsourcing is about buying a result. Secondment is about temporary expertise through an agency. Outstaffing is about extra capacity that you immediately deploy in your own daily process.

Do you want to maintain control over your backlog, communication, and planning, but not bear fixed employer burdens? Then outstaffing is the model that comes closest to expanding your own team. MantabOne helps Dutch and European companies with this through remote development teams that can participate in their existing workflows. See how IT outstaffing fits within a scalable SME business model or contact us to discuss what capacity your team needs right now.

What is the main difference between outstaffing and outsourcing?

The main difference lies in control. With outsourcing, you purchase a complete end result and the external partner takes responsibility for project execution and work distribution. With outstaffing, you add external developers directly to your own team, retaining daily direction over priorities and workflows while the supplier handles employment administration.

How does outstaffing work in daily practice?

In practice, hired external IT professionals work as part of your existing team. They participate in your Agile stand-ups, pick up tickets from your backlog, and use your regular communication tools like Slack or Teams. Meanwhile, the outstaffing partner handles employer responsibilities such as payroll, sick leave, and holiday pay.

When should a company choose outsourcing?

Outsourcing is the right choice when you want to purchase a complete, clearly defined project or system and prefer to let an external party organize execution and delivery without having to manage the daily development process internally.

How does outstaffing differ from traditional secondment?

While both models give you daily management over the professional, traditional secondment typically focuses on local talent where on-site presence is important and may involve longer recruitment times and fixed contractual obligations. Outstaffing provides external capacity without placing workers on your payroll or requiring a large internal HR process.

What does MantabOne provide in its IT outstaffing model?

MantabOne integrates selected IT professionals from Indonesia into clients' existing teams and Agile workflows. Clients pay for productive hours at fixed rates without payroll overhead or obligations for sick leave and holiday pay, and backup or replacement capacity is available if someone is absent.