The problem you're facing
Cloud migrations fail the same way: an approximate inventory, a "weekend" cutover without rehearsal, and dependencies discovered in production. Result: weeks of stabilisation, surprise costs, and users missing the old system.
Our answer
We migrate methodically: complete mapping, per-application migration plan with order and windows, full rehearsal in a test environment, D-day cutover with a rollback plan, then supervised stabilisation. Migration is a project, not a weekend.
What LaMeDuSe takes care of
- Mapping of applications, data and dependencies
- Migration plan: order, windows, success criteria
- Documented target architecture (our European cloud or other)
- Full rehearsal on a test environment
- D-day cutover with rollback plan
- Stabilisation: monitoring, optimisation, handover
- Complete documentation of the target environment
Our methodology
- 1
Inventory & mapping
Applications, data, dependencies and flows: you only migrate well what you have mapped.
- 2
Migration plan
Migration order, intervention windows, rollback plan and success criteria defined per application.
- 3
Rehearsal
Every migration is rehearsed in a test environment before the real switch: no first time in production.
- 4
Cutover & stabilisation
Execution on D-day, verification of monitoring, backups and performance, then handover.
Relevant technologies
Security
Encrypted transfers, segmentation of source and target environments, and data integrity checks after every step.
Hosting & infrastructure
The target can be our European cloud or your own infrastructure: we migrate to what serves your constraints, not the other way round.
Maintenance
After the cutover, operations can stay with us (managed services) or return to your teams, with full documentation.
Why LaMeDuSe
We migrated our own infrastructure and operate the result daily: we know cloud migration pitfalls because we met them on our own systems, not just our clients'.
Frequently asked questions
Depending on scope: a simple application in a few weeks, a complete information system over several months, in stages. Each step is delivered independently : you don't wait for the end to benefit from the first results.
Most often a short, planned interruption (night window), sometimes none (progressive migration, transparent cutover). Duration depends on the application; it's known and rehearsed before D-day.
The one that serves your constraints: our European cloud (sovereignty, predictable costs), a hyperscaler if your services depend on it, or a hybrid architecture. We recommend with pros and cons; you decide.
The rollback plan is prepared and tested: the old environment stays operational during cutover, and an abort criterion is defined before starting. A migration failure is established in hours, not weeks.