SAP recommends SAP Activate and the 893+ tasks which it covers, as the right methodology for ECC to S/4HANA migration/conversion. SAP Activate supports the use of add-ons and extensions developed by SAP partners. It enables a coherent, integrated experience even if you are customizing SAP S/4HANA for specific business processes. With SAP Activate methodology and KTern.AI, you get a disciplined project management approach for SAP S/4HANA migration. Read more: https://ktern.com/article/sap-activate-s4hana-conversion/