For the past several years, the Bing Search API has made search data available for developers to innovate and build upon. Today we are announcing that the Bing Search API will transition to an offering made available on the Windows Azure Marketplace. The Windows Azure Marketplace is a one stop shop for cloud data, apps, and services, including the Microsoft Translator API. Through this platform, developers can access hundreds of data sets and APIs and distribute their applications through the marketplace.
More detail here.
Bing Services include Bing API and Bing Maps.
The Bing API, Version 2 provides developers and site managers with flexible, multiple-protocol access to content SourceTypes such as Image, InstantAnswer, MobileWeb, News, Phonebook, RelatedSearch, Spell, Translation, Video, and Web.
The Bing Maps documentation set provides information on the APIs that power Bing Maps, an online mapping service that enables users to search, discover, explore, plan, and share information about specific locations. By using traditional road maps, labeled aerial photo views, low-angle high-resolution aerial photos, and proximity searching capabilities, Bing Maps provides unique opportunities for developers to incorporate both location and local search features into their Web applications.