This week, Bing Maps Keys is going changes from the deep single list of keys to a matrix of keys and application types. Moving forward you will "only need to select one of three Bing Maps' Key types: Trial, Basic or Enterprise," Bing stated.
Each of these is described below:
Trial Key meant to be used for testing access and application development of Bing Maps controls and services. "Trial keys will expire automatically after 90 days and are limited to a small set of transactions during the 90-day period (currently, 10k transactions for every 30-day period). Once 90 days or 10k transactions is reached, the key will become invalid and will no longer process requests," explains Bing.
"Currently, users can get 500,000 transactions for free on their public or non-restricted applications. Also, public-facing Not for Profit, Education and Broadcast applications fall under this key type for free use," Bing said.
Enterprise Key is used by licensed customers. Now, "if you have a license to use Bing Maps, you'll want to select an Enterprise Key for most of your development," Bing said.
The second part of the matrix is around application type. Let's say you're building a Windows 8 Metro style application. Right now the only option is to use a Trial Key (Windows 8 Beta Key).
Note: All Windows 8 Bing Maps keys will expire in January, 2013. Microsoft suggests, that "Select a Trial Key with a Windows 8 application type if you're developing Windows 8 applications; a Basic Key with a Windows 8 application type if you're comfortable with the public TOUs governing your use; or, an Enterprise Key with a Windows 8 application type if you're building a non-public facing or restricted application."