• I agree with the previous answer. Group by functionality and purpose, not by technology. You might have a Testing resource group, for example, on which you run validations prior to moving it into a Production resource group or a MyApplication resource group. Whatever, but the grouping is by broad functionality, not by tool.

    "The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood"
    - Theodore Roosevelt

    Author of:
    SQL Server Execution Plans
    SQL Server Query Performance Tuning