Initial Infra · Rouen§ 01
Open source migration · sovereign IT

Exit Windows.Structured migration.

For SMBs: fleet audit, alternatives to Office and Microsoft 365, a pilot, then wave-by-wave migration. Real compatibility decides, not ideology.

Scoping by appointment
migration logiciels · 0/6
SILL
MicrosoftOpen source · France
Outlook
Thunderbird
Microsoft Office
OnlyOffice
OneDrive
Nextcloud
Teams
Element
Edge
Firefox
Windows 10
Linux Mint
Apps migrées
0 / 6
Données en France
0%
DINUM · SILL
source
Catalogue SILL · 6 alternatives sélectionnées
Rouen studio⊹DINUM · SILL public references⊹Ubuntu, Mint, Fedora, Debian⊹Better-controlled dependencies⊹OnlyOffice, Nextcloud, Thunderbird⊹
€590
Migration audit · flat
€250
Standard workstation · flat
100%
Data and apps in France
§ 02
— Four scopes of work

What we handle, concretely.

01 / 04
Audit.
Fleet + apps feasibility · €590

Migration audit

Before committing, we validate it works. Hardware inventory, business apps testing, real blocker identification, costed cutover plan.

  • Workstation inventory (CPU, RAM, GPU, peripherals)
  • Business apps testing on pilot workstation
  • Justified distribution choice
  • Costed and phased cutover plan
02 / 04
Migration.
Full workstations · from €250

Workstation migration

Wave-by-wave cutover of 5 to 10 workstations to limit friction. Backup, install, data, apps, user training in the same day.

  • Full data + settings backup
  • Linux install + drivers + standard apps
  • Email, contacts, files migration
  • 1h group training per wave
03 / 04
Apps.
Business compatibility · on quote

Business apps

Adobe, AutoCAD, Sage, sector software: case-by-case evaluation. Wine, Bottles, Windows VM, or native alternative — we choose what works, not what's preferred.

  • Wine or Bottles testing for Windows apps
  • Lightweight Windows VM if blocked
  • Search for native Linux alternatives
  • Documentation of remaining limits
04 / 04
Support.
2-week hyper-care · included

Post-migration support

The 2 weeks after a cutover are critical. Dedicated helpdesk, training sessions, user docs, continuous care if you want. Prevents users from panicking back to Windows.

  • Helpdesk in French email + video
  • 2-week hyper-care post-cutover (included)
  • Continuous care (patching, updates, support)
  • User documentation maintained up to date
§ 03
— We hear it all the time

Six pains we know.

01
Microsoft 365 climbing
Per-user subscriptions add up with fleet size and options. Without an inventory, recurring spend becomes difficult to connect to actual usage.
02
Cloud Act and US-hosted data
Data location, subprocessors, administrative access and applicable law must be read in the contracts. Migration can reduce some dependencies without guaranteeing compliance on its own.
03
Vendor lock-in
Office, Outlook, Teams, OneDrive: all bundled. Exiting one Microsoft product becomes a global migration project. You no longer decide.
04
Concentration risk
When identity, files, email and collaboration depend on one ecosystem, an outage or contractual blockage can affect several functions at once.
05
Constrained hardware
A new operating system's compatibility requirements can exclude otherwise usable workstations. The audit separates what must be replaced from what can be extended cleanly.
06
Sovereignty ignored
The SILL and La Suite numérique provide public references for open alternatives. Many SMBs have simply never compared their dependencies with those options.
§ 04
— Who it's for

The right match.

We're a good fit if
  • You have 1 to 100 Windows workstations to evolve
  • Your business apps are web, multi-platform or Wine-compatible
  • You want out of Microsoft costs (Win, Office, ESU)
  • You're sovereignty-conscious (GDPR, NIS2, French hosting)
  • You accept 1 to 3 months of progressive transition rather than a big bang
We're not the right choice if
  • Your business strictly depends on Adobe Creative Cloud, AutoCAD or Windows-only software with no alternative
  • You want instant change without user transition or support
  • You're looking for a provider that validates your choices without questioning real dependencies
— Decided?

30-min video call to look at your fleet · no commitment.

Book a call
§ 05
— How it works

Three steps. Not one more.

01

Scoping call.

02

Audit + pilot.

Progressive migration · no business interruption

03

Cutover + training.

Three paths

Which shift fits your SMB?

Three common approaches help frame the discussion. The choice depends on your tolerance for change, business applications and actual obligations.

Status quo

All-Microsoft

Idéal pour

Very non-technical teams, critical dependence on Microsoft 365 + Adobe, low sensitivity to sovereignty or recurring costs.

Tradeoffs

Recurring spend and concentrated dependencies need ongoing review. Compliance depends on architecture, contracts and usage, regardless of vendor.

Our recommendation

Pragmatic hybrid

Idéal pour

SMBs starting progressively: Linux OS + open office tools + Nextcloud, while retaining genuinely critical Windows applications. Timing is defined after the pilot.

Tradeoffs

Some SaaS or Windows applications remain. The first benefit is dependency control; savings are only stated after an inventory and costed assessment.

Open trajectory

Full open source

Idéal pour

SMBs with mostly web or cross-platform applications and a strong need to control technical and contractual dependencies.

Tradeoffs

A more demanding transition: some business applications need an alternative or VM, or must remain in place. The outcome also depends on hosting and suppliers.

The right choice depends on your context. We often start with hybrid and progressively extend to full open source as the team and apps follow.

§ 06
— Pricing per scope
€590

Audit. Cutover. Care.

“€590 for a targeted migration audit that validates feasibility before committing. €250 per standard workstation for the full cutover (install, data, apps, training). Fleet packages with volume discounts beyond 20 workstations.
— Options de paiement
Migration audit · 1 day
€590 · flat fee
Standard workstation
from €250 · install + data + training
Fleet package · beyond 20 seats
on quote · volume-based
— Included in standard workstation migration
  • Full backup of existing data
  • Linux install + hardware drivers
  • Apps migration: email, browsing, office, storage
  • User profile setup (Windows-like ergonomics)
  • 1h group training session
  • 2-week hyper-care post-cutover
— Beyond the cutover

Complex business apps

on quote

Adobe, AutoCAD, Windows-only business software: Wine compatibility, lightweight Windows VM or native alternative. Evaluated during pilot.

  • Wine or Bottles compatibility test
  • Lightweight Windows VM if needed (existing license)
  • Search for native Linux alternatives
  • Documentation of any remaining limits

Sovereign office suite

from €4 / user / month

Progressive exit from Microsoft 365 to OnlyOffice or LibreOffice + Nextcloud hosted in France. Data brought back, sharing scoped.

  • Outlook → Thunderbird migration
  • OneDrive → Nextcloud migration
  • OnlyOffice or LibreOffice by usage
  • Rouen Nextcloud hosting included

Operations handover workshop

on quote

A structured session with your internal owner to transfer routines, procedures and responses to common incidents.

  • Operations runbook handed to the team
  • Tested update procedure
  • Q&A workshop with the internal owner
  • Escalation plan for complex incidents
§ 07
— After the cutover?

We stay reachable.

Migration is not an event, it's a habit shift. Here is how we support (or not) what comes next.

01
2-week hyper-care
During the 2 weeks after a group cutover, priority support to resolve daily friction at no cost. It's the critical phase to avoid rejection.
02
User documentation
Practical guide to Windows → Linux equivalences for daily uses (email, files, printing, scanning, sharing). Maintained, distributable internally.
03
Recurring operations · later
Your internal IT takes over with the transferred documentation. Recurring support will belong to Initial Ops when that entity opens; it is not sold here for now.
§ 08
— Frequent questions

About us. No fluff.

We are not asking SMBs to copy the State. The SILL, La Suite numérique and ANSSI technical guidance provide verifiable public references for open-source software and architectures. They show that these components can be operated seriously, while each SMB still needs to decide from its applications, people and a prior pilot.

§ 09
— Get started

Book your
migration audit.

30 min · no commitment · we evaluate together the feasibility of cutover on your fleet.

0 / 400
Your situation

No credit card. No aggressive follow-up. If we don't click, we forget each other. Cleanly.