This scenario make sense and it give you more security.

why use WAP on-top of SharePoint & ADFS? Because it gives you a way of exposing your public SharePoint applications to the internet without anyone having any line-of-sight. This is important because it means nobody could overwhelm your SharePoint infrastructure without being authenticated first.

Read more about Publishing SharePoint with Windows Server 2012 R2 Web Application Proxy and SharePoint Server and Web Application Proxy – continued

on Windows Server 2016, please read this SharePoint + Web Application Proxy – 2016 Edition

This scenario makes sense and it gives you more security.

Why use WAP on-top of SharePoint & ADFS? 

Because it gives you a way of exposing your public SharePoint applications to the internet without anyone having any line-of-sight. This is important because it means nobody could overwhelm your SharePoint infrastructure without being authenticated first.

Read more about

• Publishing SharePoint with Windows Server 2012 R2 Web Application Proxy

• and SharePoint Server and Web Application Proxy – continued

on Windows Server 2016, please read this

• SharePoint + Web Application Proxy – 2016 Edition