The Floe back-end component installs on an ABAP stack (SAP NetWeaver or S/4HANA). Floe Email Builder is a SAPUI5 app that can be deployed like any other Fiori app
Since Arch Floe is an ABAP-stack-only solution, and since there is no PDF attachment, then the rendering of the e-mail is much faster than the rendering of an equivalent PDF output form. The resulting e-mail size is much smaller without the attachment, and so the data packet is smaller and the data storage requirement is reduced. [...]
Arch Floe does not need to be installed on the SAP Business Suite or S/4HANA server. It can be installed on a separate SAP NetWeaver instance if desired.
Arch Floe is installed as an ABAP add-on using the standard SAP Add-on Installation Tool (transaction SAINT). The Floe SAPUI5 apps are installed separately, and can be deployed on premise to to the SAP Cloud.
Floe requires a SAP Netweaver 7.0 application server (or above), with the ABAP and BASIS components installed. (SAP_ABA 700, SAP_BASIS 700). The SAP system must be connected to an SMTP server for outbound e-mail traffic.