Background Maps (Google, Bing, etc)
Use Bing Map
This sample shows how to load a map from Bing's REST service and switch between different map types (road, aerial, hybrid, etc.).
Load An ArcGISServerRestOverlay
This sample demonstrates how to load a map from the ESRI ArcGIS REST service. This overlay gives developers a simple and powerful tool to access their maps that reside on ArcGIS Server. This new overlay utilizes the ArcGIS Server REST API at http://resources.esri.com/help/9.3/arcgisserver/apis/rest/.
Use OpenStreetMap
This sample shows how to load a map from OpenStreetMap. OpenStreetMap (OSM) is a collaborative project to create free geographic data for the entire world. It can be thought of the "Free Wiki World Map".
Load a WmsOverlay
This sample demonstrates loading map images from a standards-compliant Web Map Service (WMS). It supports WMS schemas of version 1.1.0, 1.1.1 and 1.3.0.