Status

Owner

Eric TRIFFAUX

Stakeholders


Decision: Solution 1

Decision made by: LAI DAWN, MATHE, Alexandre , TRIFFAUX, Eric 

Date:  

Online Meeting: 2026.04.02 - GAM VM alignment call

Decision Context

The data extraction phase is scheduled to commence in early April and will conclude by late June , running concurrently with the five migration waves to ensure all necessary data is captured prior to final decommissioning.

Activity

Pilot

Wave 1

Wave 2

Wave3

Wave4

Wave5

Audit  and Data extraction

N/A

08/04/2026

15/04/2026

27/04/2026

1/05/2026

6/05/2026

Go/NoGo to start Prestaging

2/03/2026

10/04/2026

17/04/2026

29/04/2026

5/05/2026

8/05/2026

Go/NoGo to start Cutover Readiness

16/03/2026

4/05/2026

11/05/2026

18/05/2026

25/05/2026

1/06/2026

Go/NoGo to start Cutover Execution

20/03/2026

8/05/2026

15/05/2026

22/05/2026

29/05/2026

5/06/2026

Cuto-off/Go-Live

23/03/2026

11/05/2026

18/05/2026

25/05/2026

1/06/2026

8/06/2026

To perform all of those activities Syensqo will rely on Revevol who will use Google Application Manager (GAM).

Details

Recommendation: 

Go for solution 1 reusing one of the existing GCP project running GAM today for daily operation with a new dedicated machine completely delegated to Dawn and Revevol. Delete the data and or the machine a the end of the migration in June or July 2026.


Solutions

  1. GCP same project : reuse existing project with an additional machine to not impact the run activities, while the data export will be huge. (today the delegation are managed manually)
  2. GCP but with a new project completely managed by REVEVOL : replicate current GCP project flows etc, Dawn having the access, and sharing appropriate permission with Revevol only. But do not make sense to segregate the project while we can have a dedicated machine in one of the existing project.
  3. AWS : too long, and extra security concerns
  4. AZURE : too long, and extra security concerns, Azure is not yet configured for T0
  5. Revevol : if we can handle on our GCP , better to avoid.

See also

The following section describes relevant documentation:

Description

Repository

GAM High and Low level Design