The Bing Maps Locations API can be used to get location information associated with map coordinates. The API also provides functionality to get coordinates for a location based on values such as postal code and address and also get coordinates for a location provided in a query string. The API uses both REST and SOAP protocol and responses are formatted in XML and JSON.
Almost every app that uses a mapping API needs latitude/longitude points. To get geocodes you need to convert an address to a point on the earth. That's where you'll need one of the 54 geocoding APIs in our directory. This post covers seven free geocoders and compares them on several aspects.