How do you choose a digital product studio or software partner in Belgium?

What you want to be able to count on

You do not recognise a good partner for custom or platform work by the best pitch deck, but by how they handle uncertainty. Meaningful signals:

Thinking in product: they first ask questions about which problem you are solving, for whom, and how you measure success, and only then does it get concrete about features and technology. An exploration or alignment phase (with us: Imagine) belongs before the actual build (Create), not immediately quoting on a list without that context.
Transparency about trade-offs: speed, budget, quality and risk should sit side by side; "everything is possible, all at once" is rarely something a mature team stands behind.
Integration experience: realistic conversations about legacy, APIs, data ownership and the chain (especially in industry, logistics and larger organisations).
Continuity: who is in the team, how do you prevent everything depending on one person, what does ongoing development look like after launch (Evolve)?
Evidence: cases, references, how they treat accessibility and security as early implicit requirements, not "nice to fix later".

Belgian context

For many Flemish and Belgian projects, these also matter: language (NL / FR / EN), collaboration both remotely and on-site (Antwerp, Ghent, Leuven), and experience with stakeholders in matrix organisations. Feel free to ask how workshops run and how decisions are recorded: that tells you a lot about the rest of the project.