I am currently involved in a project where we need a few services for complex geometry processing.
At the moment, some services has been implemented as Python GP-tools and deployed on an ArcGIS server. This is an ugly approach, thinking of debugging, error handling, performance etc.
ArcGIS Runtime has started to become a reasonably capable API, and most of the functionality we need is there.
It is intended as a client API though, has anybody tried to use it on the server side ? I am thinking of ASP.NET Web Api.