Sandbox instances in Microsoft Dynamics CRM Online
The Feb 2014 (18.104.22.168) build of Microsoft Dynamics CRM Online changed the way test instances are managed. They are now named sandbox instances and are marked as so in the user interface with a SANDBOX watermark.
Future releases will add new capabilities to sandbox instances including:
- Reset an instance
- Copy a production or sandbox instance into a sandbox
This blog article on MSDN provides the details.