Make-or-buy is a boundary decision: it determines which capabilities the organisation will own and which it will depend on others to provide.
A make-or-buy analysis often begins with a spreadsheet.
Internal labour is compared with a supplier quotation. Overheads are allocated. A saving is calculated. The decision appears commercial and contained.
But the underlying question is much larger.
When an organisation decides to make, it commits capital, people, management attention and capability. When it decides to buy, it creates an external dependency and a commercial relationship that must be governed. Either choice can be correct. Either can also create costs that the original comparison never captured.
The supplied procurement material places make-or-buy at the heart of procurement. Walker and colleagues connect the decision to transaction-cost economics, the resource-based view of the organisation, risk, opportunity and strategic context. This is the right level of analysis for executives.
The Strategic Context
Projects rarely sit entirely inside one organisation.
Even highly capable firms rely on external suppliers for specialist skills, equipment, capacity, technology or services. The issue is therefore not whether external sourcing is acceptable. It is where to draw the boundary.
A resource-based view asks whether the organisation possesses resources and competencies that contribute to competitive advantage or strategic capability. The Walker material also points to knowledge and dynamic capabilities: the ability to respond to changing conditions, not merely perform a fixed task.
That means a make-or-buy decision can alter what the organisation is capable of becoming.
A supplier may initially appear to provide a service. Over time, the supplier may also accumulate process knowledge, technical insight and operational experience that the buyer no longer possesses internally.
The economic decision becomes a capability decision.
What Leaders Commonly Misread
External price is comparable with internal cost
Often it is not.
Internal cost calculations can include allocated overheads that do not disappear when work is outsourced. External quotes may exclude buyer-side contract management, mobilisation, transition, integration or change. The two numbers may therefore describe different economic boundaries.
If the market can perform the work, the market should perform it
Market capability is relevant but not decisive.
Some work may be externally available yet strategically important to retain because it protects intellectual property, supports innovation, sustains design authority or enables the organisation to challenge suppliers intelligently.
Outsourcing transfers the problem
It transfers some activity. It does not transfer executive accountability for the outcome.
The buyer still needs enough capability to define requirements, evaluate performance, govern changes and understand whether the service remains fit for purpose.
Make means permanent and buy means flexible
The opposite can occur.
Internal capability can sometimes be redeployed. A long-term outsourced arrangement can become difficult to exit because of proprietary systems, data dependency, asset ownership, workforce transfer or loss of internal knowledge.
Reversibility must be assessed explicitly.
Reframing the Issue
The make-or-buy question should be reframed as:
Where should capability, control and economic responsibility sit to produce the greatest sustainable value?
That question has four dimensions.
Strategic importance
Does the activity contribute directly to customer value, differentiation, safety, regulatory responsibility, critical knowledge or future strategic options?
Relative capability
Can the organisation perform the work at the required quality, scale and speed? Can the market do it better? Does the organisation need the work internally to continue developing competence?
Transaction environment
How difficult is the work to specify, measure and govern? Are requirements stable? How much coordination is needed? How exposed is the buyer to opportunistic behaviour or switching cost?
Future uncertainty
Will demand, technology, regulation or business strategy change? Which option preserves the ability to adapt?
The decision therefore combines economics with organisational design.
Strategic Analysis
Internal work has opportunity cost
Choosing to make consumes capacity.
A technically capable engineering team may be able to design a component internally, but doing so may delay a more strategic product-development program. The right comparison is not simply internal cost versus external price. It is the value of the best alternative use of scarce internal capability.
External work has transaction cost
The Walker material highlights the effort involved in tendering, selecting, transitioning, administering and eventually terminating external arrangements.
Those costs grow when work is difficult to define or supplier performance is difficult to observe.
Capability can erode quietly
Capability loss rarely arrives as a single event.
At first, an external specialist performs execution. Later, it prepares the design. Then it owns key tools, methods or data. Eventually, the buyer can no longer assess whether the supplier’s proposed solution is appropriate without asking the supplier itself.
At that point, commercial dependency has become knowledge dependency.
Partnership can be a third path
Make-or-buy is not always binary.
Projects can retain architecture, design authority or core knowledge internally while sourcing execution. They can out-task specialist work without transferring ownership of the broader process. They can partner to develop new capability while requiring knowledge transfer.
This is why the sourcing model deserves its own decision after the make-or-buy boundary is considered.
Related article: In-House, Out-Task or Outsource? Choosing the Right Sourcing Model
The Portfolio Dimension of Make-or-Buy
A make-or-buy decision that looks sensible for one project can become irrational across a portfolio.
Suppose five projects each need a small amount of specialist automation engineering. Viewed separately, none justifies recruiting or developing a permanent internal capability, so each project buys the work externally. The decision is reasonable at project level.
Viewed together, however, the organisation may be spending enough to support a core internal team while repeatedly paying tendering, mobilisation and supplier-learning costs. It may also be losing the opportunity to build reusable standards and technical knowledge.
The reverse can also occur. Several business units may each retain small internal teams performing a mature, standardised service that the external market can provide efficiently at scale. What appears to be local control may be enterprise-wide duplication.
Portfolio governance therefore needs a capability lens. Repeated make-or-buy decisions should be aggregated periodically to ask whether the organisation's sourcing boundary still makes sense as a whole.
The key threshold is not simply spend. It is the combination of recurring demand, strategic importance, scarcity, learning value and the cost of coordination.
Decision Framework
A practical make-or-buy review should test six dimensions.
| Dimension | Make is stronger when… | Buy is stronger when… |
|---|---|---|
| Strategic importance | Capability is core to future advantage or control | Activity is non-core and externally mature |
| Internal competence | Organisation is strong or must develop competence | Supplier market has materially superior expertise |
| Capacity | Internal resources are available without displacing higher-value work | External supply relieves a genuine constraint |
| Specify and measure | Work is difficult to specify externally or requires tacit knowledge | Deliverables and service levels can be defined clearly |
| Dependency | Loss of control would create material strategic risk | Switching and substitution are realistic |
| Uncertainty | Internal capability supports adaptation | External flexibility is faster and less costly |
Leaders should also ask what conditions would change the decision. A temporary capacity shortage may justify buying now without implying permanent outsourcing. A maturing technology may justify external supply until internal demand becomes stable.
From Strategy to Execution
Immediate action: identify the project’s highest-value externally sourced activities and document the original reason each was placed outside the organisation. If the answer is simply “cost”, test the hidden assumptions.
Medium-term capability: require material make-or-buy decisions to include transaction cost, opportunity cost, retained capability, exit conditions and knowledge ownership.
Long-term positioning: treat capability as part of portfolio planning. If multiple projects repeatedly buy the same specialist competence, the organisation should periodically reconsider whether that competence has become strategically important enough to build internally.
Signals to Monitor
Watch for internal teams that can no longer specify or challenge supplier work, repeated emergency extensions because switching is impractical, growing dependency on proprietary methods, or cost models that assume internal overhead disappears when work is outsourced.
Also monitor the opposite condition: internal teams retaining work primarily because “we have always done it” even when market specialists can deliver better value and internal capacity is constrained.
Make-or-buy discipline must challenge both outsourcing bias and insourcing bias.
Questions for the Leadership Team
- Which capabilities must we still possess after the project is finished?
- What internal work would be displaced if we choose to make?
- What buyer-side costs appear only after we choose to buy?
- Could we still define, evaluate and replace this service after three years of outsourcing?
- Which knowledge or intellectual property will accumulate through delivery, and who will own it?
- What change in market, technology or strategy would cause us to reverse the decision?
Closing Perspective
Make-or-buy decisions establish the economic and capability boundary of the organisation.
The wrong decision may look attractive for several reporting periods before its full cost appears. The right decision may involve spending more initially to preserve control, or using external capability precisely because the organisation should not invest in an activity that others can perform better.
The executive task is to decide deliberately what the organisation needs to own, what it only needs to access and what it must remain capable of controlling even when someone else performs the work.
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