ABAP Platform 2020 is part of SAP S/4HANA Foundation 2020 for SAP HANA-only Add-Ons.

ABAP Platform 2020 is the technology platform underlying SAP S/4HANA 2020 and is shipped as part of SAP S/4HANA 2020. In addition, ABAP Platform 2020 is part of SAP S/4HANA Foundation 2020 for SAP HANA-only Add-Ons. [原文链接]