Hi Andre;
Odata service called for building the page when the user logs in is as follow
/sap/opu/odata/UI2/PAGE_BUILDER_PERS/PageSets('%2FUI2%2FFiori2LaunchpadHome')?$expand=Pages/PageChipInstances/Chip/ChipBags/ChipProperties,Pages/PageChipInstances/RemoteCatalog,Pages/PageChipInstances/ChipInstanceBags/ChipInstanceProperties,AssignedPages,DefaultPage
So in the backend if we go to corresponding Odata service and find out the data provider class it is
/UI2/CL_GW_DP_V06_PB_PERS
/IWBEP/BD_MGW_SRV_RUNTIME is he only BADI which I have seen getting called in this process. But it is checked as "Can only be implemented by SAP - internally".
Regards,
Sarbjeet Singh