Options for publishing network analyst layer to ArcGIS Server 10.9.1 using Arc Pro

[TXDOTTXDOT]

Can ArcGIS Pro 2.9 publish a Network Analysis Layer (with a map service) to memory on a hosted ArcGIS Server 10.9.1  (not a local File GDB) ?

Of course I'm able to readily accomplish this task from ArcMap 10.8.2, yet this does not appear to be an option through Arc Pro. Previously, in ArcGIS Server 10.7.1, I had excellent routing capability using an analysis layer that ArcMap wrote to a memory address.  I'm hoping to replicate this from Pro.

Any help is appreciated,

JP

[deelesh]

@TXDOTTXDOT 

ArcGIS Pro supports similar capability for publishing a map service with network analysis capability. You can find the details on how to publish such a service in https://pro.arcgis.com/en/pro-app/2.9/help/analysis/networks/publish-a-map-service-using-network-ana...

With regards to local file GDB, ArcGIS Pro always stores the sub-layers from a network analysis layer using feature classes in a file GDB. However, when the map service with network analysis capability (publishsed from ArcGIS Pro) starts up it will load all the sub-layers from file GDB feature classes into memory and from that point onwards keep those classes in memory. So while there is a difference in how the sub-layers are stored between ArcMap and ArcGIS Pro within a network analysis layer, the published map service with network analysis capability behaves the same.

Hope this helps

[TXDOTTXDOT]

Thank you, that certainly does help!  And, the documentation you provided has useful embedded links that approach the publishing scenario I'm facing -- a map service w/ basic routing that supports a server object extension.   My dilemma, now, is that my organization might not allow me to publish a map service with all data copied to the server.  I would have to seek an exception to publishing only from registered sources (in the data store)... and thus you see the prior advantage I had with tucking away the sub-layers in memory during the publishing process.

So, with NA routing, is there a way to publish a map service in ArcGIS Pro (any version) using BOTH unregistered data stored in the local workspace AND the data store ? 
 
If not (and I'm really not getting my hopes up), then perhaps I can get an agency waiver to publish one version of the map service using the unregistered (local) analysis layer for routing....  And then a second version of the map service with all remaining data, registered at the data store.  The intended result would be that the SOE could call the REST API for routing capabilities in "map service one", while computing and processing the business geo-data from "map service two".

Hope that makes sense.  Pls let me know if I'm missing a corner solution, here.

Sincerely, JP