Data migration is one of the most critical phases in any SAP S/4HANA implementation. A successful migration ensures that clean, accurate data from legacy systems is loaded into the new S/4HANA system. SAP provides the S/4HANA Migration Cockpit as the main tool to manage migrations, and the Migration Object Modeler (LTMOM) as a powerful environment to customize migration objects and rules. By leveraging standard SAP migration APIs under the hood, the cockpit reduces the need for extensive custom coding during data loads.