When I add the service from my GIS Server, it saves as a web map. I need it to be a web image layer so I can use the service in ArcMap.
When adding a service from your ArcGIS Server, do it from the My Content window and not from the Map. In My content, create a folder to organize your content.
In the next dialog box, enter the URL of Map Service layer from your ArcGIS Server Rest Services Directory. If the service is a secure service, the dialog box will change and allow you enter your credentials. You will also have the opportunity to store the credentials with the item so your ArcGIS Online users will not get prompted for credentials every time the service is accessed. The option is yours.
Once the item is added. It will show up as a feature layer in ArcGIS Online.
Thank you so much for your response!
When I published the service from ArcMap using the Share As, one of the options is to Share the service to your organization/my content.
To add to Joseph Segretto, GISP's post, you need to add the full map server url when creating a map image item type:
If you add the layer and specify a layer number,
you will create a feature layer.
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