ArcGIS Runtime API looks almost the same as ArcGIS Server API

Discussion created by laolai on Jul 27, 2011
Latest reply on Aug 9, 2011 by MBranscomb-esristaff
I thought the runtime API is much more than that.

So a basical question: does ArcGIS runtime allow you to add a featureclass dynamically to the map?  Or you need to do it through a mxd file.