I have an internal custom portal which is supposed to access the d365 crm via application user concept. What would be the licensing cost for the federated users ?

I have an internal custom portal which is supposed to access the d365 crm via application user concept. What would be the licensing cost for the federated users ?
Hi partner,
Please refer to the following links.
https://colinvermander.com/2019/07/25/powerapps-portals-licensing-for-october-2019/
https://powerapps.microsoft.com/en-us/blog/new-licensing-options-for-powerapps-and-flow/
We also recommend you to contact sales for more professional help.
https://info.microsoft.com/ww-Landing-PowerApps-Contact-Us.html?LCID=EN-US
Regards,
Leo