I logged into one of my AWS accounts this morning and what did I see? A brand new feature staring at me!
As it says, DynamoDB is a “Fast, Predictable, Highly-Scalable NoSQL Data Store” Which really means a highly available key-value store. Amazon has been using DynamoDB for the underlying storage technology for core parts of amazon.com for years.
Here’s Amazon’s page on DynamoDB.
You can read more technical details about DynamoDB here – http://www.allthingsdistributed.com/2007/10/amazons_dynamo.html