JSON functionalities are now Generally Available in Azure SQL Database. All functions that are available in SQL Server 2016 are also available in Azure SQL Database.
JSON is available in all service tiers (basic, standard, and premium) but only in new SQL Database V12.
Further details are available on the SQL Server Database Engine Blog.
Microsoft TechNet Virtual Labs enable you to quickly evaluate and test its newest software products and technologies using a cloud based private virtual machine environment.
This lab we’re highlighting here lets you develop a SQL Server 2016 RC2 Master Data Services solution to store and manage geographic master data.
Get started here.