Procurement process
Each step its own decision
Each step stands alone
Every step in our offer is a standalone assignment with its own go or no-go. You commit each time only to the step you sign, and every step delivers something that remains useful on its own. What differs per step is who signs and which rules apply. Choose your situation below.
Single private award, Gids Proportionaliteit; many municipalities apply € 25,000 to € 30,000 internally.
| Stage | Contract value | In Netherlands |
|---|---|---|
| 1. Call and live demo | free | outside the procurement decision |
| 2. Assessment, one of three levels | € 675 to € 1,750 | direct award |
| 3. Phase 0, requirements test and pilot design | € 12,500 | direct award |
| 4. Pilot, 20 to 100 workstations, four years of support counted | € 14,440 to € 30,200 | direct award at every size |
| 5. Rollout after the pilot, per workstation € 167 with support | on your count | direct award up to 299 workstations national procedure up to 1,293 European tender above that |
Where a municipality applies an internal line of € 25,000 to € 30,000, phase 0 and every assessment level still sit under it, and a pilot fits up to band B; the assessment report says which.
Phase 0 and the pilot are two decisions, each separately under our upper limit per assignment. Added together they come to € 42,700 at the largest pilot, still under the ceiling should an auditor add them up.
Ceilings for the Netherlands, Belgium, France and Sweden verified on 4 September 2026; the other target countries were checked on 5 September 2026 and are listed under Another EU country, with their status. We keep our packages at around seventy per cent of the ceiling, so there is room left for additional work within the same direct award route. The contract value counts the order plus four years of support, as the directive does.
With a signing limit of € 25,000 one person signs the assessment, phase 0 and a pilot up to 70 workstations. Anything above that goes to the layer above.
| Stage | Contract value | Who usually signs | Under your limit |
|---|---|---|---|
| 1. Call and live demo | gratis | free of a decision and a budget line | one signature |
| 2. Assessment, one of three levels | € 675 to € 1,750 | IT manager, fits in an ordinary monthly budget | one signature |
| 3. Phase 0, requirements test and pilot design | € 12,500 | director or finance lead | one signature |
| 4. Pilot, 20 to 100 workstations | € 14,440 to € 30,200 | director, and the council with a large estate | one layer up |
| 5. Rollout after the pilot | € 167 per workstation | investment decision with the payback period included | one layer up |
A company buys freely. The limit that matters is internal: the amount a manager, a director or the board may commit on their own. Set that limit above and you see which steps stay below it. The contract value counts the order plus four years of support.
Here the payback period counts
The question is when it pays for itself. The assessment works that out on your own estate and your own applications, and the report is yours.
The replacement round is a balance sheet item
Deferring hardware replacement hits your capital budget directly. At forty per cent of the machines at € 700 that adds up quickly.
Your own purchasing conditions
We sign yours. What stays in place is the data processing agreement, the exit arrangement and the escrow option.
Small estate and the same price
The programme bundles organisations. That is how a company with fifteen workstations reaches the same volume step as an agency with thousands.
Speed of decision as an advantage
A company can commission the assessment within a week: the council cycle, the tender calendar and the publication period stay out of the picture, where a public body usually runs through a decision round and a procurement process. The same step, shorter lead time.
NIS2 touches your workstation too
If you fall under the Cybersecurity Act, a workstation that keeps receiving security updates is part of your duty of care, and your board approves the measures. The compliance page sets out the dates and the thresholds.
The same for both tracks. The price list, the three assessment levels, the four documents that exist before the order, the data processing agreement, the exit arrangement and the programme. Only the layer of purchasing rules differs.
Before you order
What your buyer can write down
Four documents exist before you order anything
Data processing agreement
The model under article 28 GDPR with three annexes, including the list of sub-processors and your right to object. We accept your own prescribed model.
Compliance overview
One line per subject, with what is finished and what is still running, so your privacy officer can read the gaps instead of guessing at them.
Accessibility statement for this website
WCAG 2.2 level AA, with the open points named and dated. The statement for the operating system itself follows on delivery; the compliance page says where it stands.
Reporting vulnerabilities
A published security.txt and confirmation within two working days.
Ask every supplier for these four before the order. The answer tells you more than the price.
Each assignment stands alone. After each step a real decision to continue or stop follows. You buy one step at a time, and only that step. We write it in these words in the quotation, so your lawyer can read it back for themselves.
The route
Five stages and five decisions
Organisations usually get stuck on an operating system migration because of the size of the decision: it came in one piece, too large to reverse. This route is built the other way round: five stages, each decided on its own, each with a named amount at stake and a delivered result you keep, whatever you decide afterwards.
Thirty to forty minutes. You see NEXZOS running on ordinary hardware and put the questions your own people would put. Free of preparation, budget line and decision.
Three levels. The result is a written report with your machines, your applications and your own figures: what stays, what needs a route, what Windows costs you over three years and what NEXZOS costs. The report is yours to circulate internally, whatever you decide afterwards, and it stands on its own as a Windows 11 readiness document.
Four to six weeks on one defined department. The requirements from the assessment are tested against that department in practice, and you get the pilot design: which machines, which applications, which acceptance criteria, and who signs off on each.
Twenty to one hundred workstations in one department, running alongside the machines you have. Existing machines keep running. You set the acceptance criteria before it starts, and the pilot is measured against them. Priced to sit inside the direct award room that applies in your country, licences included.
Only if the pilot met the criteria you wrote yourself. One department at a time, each with its own go or no-go, so the estate stays reversible at every stage. By the time the whole organisation is on the table, you have your own figures, your own pilot results and your own data on support calls behind you.
On procurement. Each stage is a separate assignment with its own deliverable and its own decision, and each is priced to sit inside the direct award room that applies in your country. That is deliberate, and it is also why the stages are genuinely separate: splitting a single assignment into pieces in order to stay under a threshold is prohibited, so every stage has to stand on its own and be capable of being the last one. The assessment report sets out the procurement route for your own country and your own purchasing rules, in wording you can lift into an award memo or an investment request.
What keeps the risk low, concretely: six things written into the route
Your hardware stays yours
The route starts on the machines you already own, and that is also what makes the first stages cheap enough to stop.
Every stage is decided on its own
Every stage is commissioned, priced and assessed separately, so at the start you sign only the first.
The deliverable is yours
The assessment report, the application inventory and the pilot results belong to you, in a form you can hand to another supplier if you decide against us.
The pilot runs alongside
Existing machines keep running. A person on the pilot who hits a wall is back on their Windows workstation the same morning.
You write the acceptance criteria
Before the pilot starts, in your own words: support calls per user, which applications must work, what an acceptable login time is. We meet them or the pilot has failed, and that judgement is yours.
Exit is agreed before entry
Escrow, exit support and the conditions for returning to your previous situation can be arranged and written into the contract before the pilot begins, rather than after something goes wrong.
What your procurement team needs
Legal entity
TresBizz BV
BE 1033.718.409
231 Av. Louise, 1050 Brussels
Terms
General terms and conditions, ready to test against ARBIT or your own purchasing conditions.
Data processing agreement
Model available, ready for your privacy officer.
Escrow
Source code escrow with a third party can be arranged. Open for discussion at the pilot stage.
Audit
A right to audit is open for discussion and is set out per agreement.
Exit
An exit arrangement, including return of data, can be arranged and is set out per agreement.