"The era of ambient intelligence has begun, and we are delivering a platform that allows companies of any size to create a data culture and ensure insights reach every individual in every organization," quoted by Satya Nadella, CEO of Microsoft.
Personally, think this is one of the biggest pain point for most of client business where there is a need to "store and query big data" over cloud efficiently, quickly and cheap. There is a preview available for Azure Intelligent Systems Service to test only on request and registration.
Below link shows how to use the Microsoft Avro Library and Hadoop scnearios to serialize objects and other data structures into streams in order to persist them to memory, a database or a file, and also how to deserialize them to recover the original objects.
Microsoft Azure site with various offerings and Big data sheet details: