License Service Desk Plus between License Desktop central is deffirence !!!!!

License Service Desk Plus between License Desktop central is deffirence !!!!!

I have a  plan to install Desktop Central intergrate with Service Desk Plus

create 2 new servers that wiil be run Desktop Central and other run Service Desk Plus

I will need 2 Licenes Key : one for Desktop Central ,and one other for Service Desk Plus

Is that right ?
                New to ADManager Plus?

                  New to ADSelfService Plus?