PIPELINEGuide
Build API integrations yourself or have them built?
Much of what goes into API integrations can be built in-house — the question is whether it pays off. When in-house work makes sense, where the limit is, and which path is the most expensive.
Building API integrations yourself pays off when the project stays small, someone in the business has time for it, and no one depends on it going live on a specific date. As soon as other systems must interact or someone is liable if it fails, external implementation is usually cheaper — the most expensive path is the half-finished one.
01 — In-house effort
Build yourself or have it built?
- Building yourself makes sense when someone in the business has the time and interest, the project stays small, and no one depends on it being live by a specific date.
- Ready-made platforms get you to a first result quickly, but hit limits where custom processes, custom data, or integrations with existing systems come into play.
- External implementation pays off as soon as API integrations must communicate with other systems, as soon as someone is liable if it doesn't work, or as soon as the internal effort becomes more expensive than external implementation.
- The most expensive path is the halfway one: built in-house for months on the side, then abandoned and rebuilt externally. If you decide on in-house effort, set a time budget and an abort point.
- Hybrid approach: concept and setup external, maintenance internal. This is often the most economical path for API integrations — provided the handover is documented.
02 — Requirements
What you need for an API integration
- A clearly defined trigger. Not “we should do something with AI,” but a process that demonstrably costs time or orders today.
- Existing content or data. API integrations work with what's there. The more complete the starting point, the shorter the setup.
- Access to the systems involved. Whoever manages the credentials needs to be involved from the start — this is, in our experience, the most common cause of delays.
- One decision-making contact person. One, not three.
- Willingness to refine after launch. The first weeks in real operation show what was missing in the concept. That's normal and accounted for.
03 — Calculation
How to calculate it
Four numbers are enough: How often does the process occur? How long does it take? What does an hour cost internally? And what does the solution cost — one-time plus operation over three years?
An example: A process that occurs twice a week and takes 40 minutes each time ties up around 69 hours per year. At an internal hourly rate of 45 euros, that's roughly 3,100 euros per year locked in there. If a solution reduces this effort by two-thirds, it often pays for itself — depending on the actual quote — within one to two years. We'll give you the exact figure for your case after the initial meeting.
This calculation is deliberately conservative: it only accounts for the time saved, not the errors avoided or the orders that come through due to faster response. In practice, the benefit is usually higher — but you shouldn't count on it before you've measured it.
04 — Questions
Frequently asked questions
What happens during an outage?
The connection remembers what hasn't been transferred yet, tries again, and reports after multiple failed attempts. Data isn't lost, it arrives delayed.
Who maintains it later?
You receive code and documentation. We deliberately build with widely used technologies so that switching is possible.
Can multiple systems be connected simultaneously?
Yes, that's actually the more common case — for example, shop, inventory management, and accounting together. Each connection is planned and tested individually, even if everything works together in the end.
What does maintenance cost during operation?
As long as none of the connected systems changes fundamentally, ongoing effort is low — monitoring reports itself when something doesn't fit.
Is an interface more secure than a manual export?
Significantly, because human errors during export and import are eliminated and every exchange is logged. A manual export leaves no trace if something was overlooked.
How often is data synchronized?
From immediately to nightly — depending on what's technically necessary. Immediate synchronization isn't always better: for systems with post-processing, a nightly run is often the more stable choice.
What if our legacy system has no interface?
Then there are usually workarounds: database access, automated file exchange, in exceptional cases surface automation. All are more fragile than a real interface. We'll honestly tell you how stable such a solution will be before you decide.
05 — Decision
How to move forward
The most affordable next step is a conversation, not a quote. Twenty minutes is usually enough to clarify whether a project makes sense, what scope it involves, and whether we're the right fit.
If we're not, we'll say so. An honest no costs less than a project you abandon after three months — for both sides.
Next step
Initial assessment, no obligation.
Briefly describe what you need. You'll get an honest answer about what's realistic and what it will roughly cost.