這三個SAP product都有個各自的data migration approach
CRM
通過XIF和IDOC來進行CRM和legacy system之前的資料互動
比如可以把系統裡Service order的内容通過IDOC存成一個file: Step by step to send IDoc data into external receiver via XIF adapter
或者通過一個IDOC建立新的Service Order: Create new Service Order via XIF
C4C
See one example: Import Account data into C4C system via excel download and upload
Hybris
和C4C類似，也是通過csv來import/export:
The ImpEx extension allows you to create, update, remove, and export platform items such as customer, product, or order data to and from Comma-Separated Values (CSV) data files both during run time and during SAP Hybris Commerceinitialization or update process.