Altesia/Case studies/Performance platform migration and consolidated history takeover.
Finance and data transformation

Performance platform migration and consolidated history takeover.

Sector
Multi-entity group
Domain
Finance and data transformation
Mission
Performance platform migration and consolidated
Duration
4 months

Proprietary performance platform reaching end of vendor support.

Migration decision taken without a prior diagnostic on data takeover. Internal consolidation team already stretched, unable to absorb the project on top of the close calendar.

Altesia a pris le pilotage fonctionnel du projet : Entity-by-entity migration, recomputation of cumulated balances, validation by successive batches ; Migration calendar set in mirror with the close calendar. Test book run in parallel ; Controls transposed, threshold traceability, file handed over to statutory auditors.

Three structuring metrics held. The 60-entity scope was migrated in full, with no history dropped along the way.