We are exceptionally proud today to reveal Azure Data Lake. Azure Data Lake is built in the same code that runs our internal exabyte-scale data lake at Microsoft. We believe that cloud-based data lakes are a critical enabler for bringing "data culture" to everyone.
Here are a few links to get you started exploring what Azure Data Lake can do for you.
Azure Data Lake
Announcement on the SQL Server Blog
Introducing U-SQL: a new language for big data
Developers, look here for technical information