Hello everybody,
Before, around 6 years ago, I used ArcGIS 10.3, ArcGIS Server 10.3, and arcgis js api 4.x to make an interactive web GIS!
Now I'd like to achieve it with ArcGIS Pro 3.60!
Could you please advise me whether I can use the ArcGIS Server 10.5 as a map server? If I don't want to use the newer version arcgis server!
It may work but would be ill-advised.... 10.5 is retired and out of support (outside of the security issues that may be present).
I would recommend updating to a newer / supported version of Server.
As mentioned, it may work but you will probably see "odd" behavior in some of the services from the older server.