Bing™ Maps REST Services API
The Bing™ Maps REST Services Application Programming Interface (API) provides a Representational State Transfer (REST) interface to perform tasks such as creating a static map with pushpins, geocoding an address, retrieving imagery metadata, or creating a route.
If you plan to use the REST services from .NET the Bing Maps team has released an open source portable class library which makes it easy to access the Bing Maps REST services from any .NET application. You can find this library on GitHub.
For more information, check out this page: https://docs.microsoft.com/en-us/bingmaps/rest-services/