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IT Governance: Why Your External Consultants Master Your Business Logic Better Than You (and How to Regain Control)

In the Brussels ecosystem, heavy reliance on external consultancy is an unavoidable operational model. However, with an average mission turnover of 18 months, a critical part of business knowledge leaves the company with each contract end. This incomplete “knowledge transfer” represents a major risk for compliance (FSMA, GDPR) and system maintainability. Analysis of a Belgian paradox and solutions to secure your product intelligence.


Imagine the situation: you’re a CIO or IT Director in a large organization near Brussels North Station or the Schuman district. Your development team is composed of seventy percent external consultants (freelancers or via major integrators like Cronos, NRB, or Altran). This is the norm in Brussels to maintain flexibility.

These experts are competent. They write code, deliver features, and move the backlog forward. But there’s a structural flaw in this model: the Brussels Paradox.

This paradox is simple: Legally, your organization owns the code. But intellectually, it’s your consultants who hold the fine understanding of the business logic.

When a mission ends or a senior consultant changes projects, the code remains, but the “why” leaves with them. What we call “Tribal Knowledge” evaporates. For an institution subject to strict regulations, this isn’t just a technical problem—it’s a governance risk.

The Hidden Cost of Knowledge Loss

For a prudent manager (acting “as a good father would,” as the consecrated expression goes), this loss of intangible substance poses three concrete problems:

  1. Compliance Risk: During an FSMA or BNB audit, it’s not enough to show that the system works. You must explain how it makes its decisions. If your documentation is scattered across obsolete Google Docs or two-year-old Slack threads, you’re vulnerable.
  2. “Invisible” Technical Debt: New arrivals, however brilliant, don’t have the history. Without a clear domain mapping, they risk breaking implicit business rules when adding new features.
  3. The “Lock-in” Effect: You become dependent on a few key profiles who are the only ones knowing “where to hit” in the legacy system without breaking everything.

The Solution: Treat Your “Product Intelligence” as Real Estate

At Ontologiq, we believe that code is a commodity (especially in the AI era), but your business logic is a strategic asset. It must be secured, inventoried, and protected, just like your offices or financial reserves.

Our approach isn’t to replace your consultants, but to change the nature of the handover. Here’s how we solve the paradox:

1. “Reverse Engineering” Before Departure

Rather than asking the departing consultant to write a Word document that no one will read, Ontologiq uses a Repository Scanning feature. Our engine analyzes your existing codebase (Java, .NET, etc.) and automatically extracts the structure to populate a living ontology.

  • Result: You capture the field reality (the code as it’s actually executed) and transform it into a visual map understandable by both Business and IT. It’s a “photo-truth” of your system.

2. From “Code” to “Deterministic Specification”

Ontologiq’s strength lies in its ability to maintain a bidirectional trace. If a business rule changes for legal reasons (e.g., updating tax thresholds), you can immediately see the impact across the entire architecture, from the Business Plane to the Persistence Plane (database). This enables generating precise User Stories and acceptance criteria, drastically reducing costly back-and-forth with your development teams.

3. “Design-first” Compliance (Hosted in EU)

We understand the sensitivity of data in the Belgian financial and insurance sectors. Entrusting your business logic to an American “Black Box” is unthinkable. Ontologiq is hosted in Europe and strictly GDPR compliant. Your data doesn’t cross the Atlantic. This is a baseline requirement for working with Walloon and Brussels institutional actors.

Conclusion: Take Back the Keys to Your House

External consultancy will remain a pillar of IT in Belgium. It’s a flexible and efficient model. But this flexibility shouldn’t come at the expense of your intellectual capital.

With Ontologiq, you’re not just renting hands to code; you’re building a sustainable knowledge architecture. Whether your consultants stay six months or five years, your business logic stays with you.

Are you managing a complex Legacy migration or want to secure your current teams’ knowledge? Let’s discuss it through a concrete demo. We can scan one of your test repositories to show you what your code has to say.

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