Test-Drive SQL Server Data Services: Figure 2: List an Authority's Containers.
The https://authorityId.data.beta.mssds.com/v1/?q= empty query string returns a list of Containers in the Authority identified by authorityId. The oakleaf1 Authority example contains eight Containers with single Northwind tables and a Northwind container with all eight tables. Containers have a 2GB maximum size and use redundancy for data security; replicas in other data centers provide disaster recovery capability.