I understand that in order to print to a custom layout from an ArcGIS Web App, I would need to set up a print service on a server.
Although the whole process of getting a layout from ArcGIS Pro to a print service is clear as mud to me, would it be possible to set up a print service with some other server to use custom layouts for printing from a WebApp or would the print service HAVE to run off of an ArcGIS Enterprise server?