The LocationKit SDK allows app developers to integrate location data into their iOS and Android applications that goes beyond latitude and longitude coordinates to include addresses, venues, and event types. LocationKit's geo-encoded places database includes over 140 million parcels/buildings and 11 million venues in the U.S. App developers can use LocationKit to learn which locations their users frequent using detailed analytics of the location information collected by their applications.
On the Amazon cloud you could create many options for running databases in the cloud. A brief look at "Running databases on AWS" suggests comprehensive cloud as a database service resourcesoffered by Amazon. While Amazon RDS offers you the choice of MySQL, Oracle or SQL Server, Amazon DynamoDB offers you NoSQL storage while Amazon SimpleDB offers schemaless database.