Hi, you can host a feature service which can be used as a locate provider specific to a map in Pro:
Find a feature using the Locate pane—ArcGIS Pro | ArcGIS for Desktop
This supports 'Contains' or 'Equals' search against attributes in the service, so not an address search experience.
There are Esri business partners with ASP licenses of ArcGIS Server who can host an actual geocode service on your behalf.
Regards