With the new Azure SQL Database tier structure, it seems important to monitor your database "DTU" usage to know whether to upgrade or downgrade to another tier.
When reading Azure SQL Database Service Tiers and Performance Levels, it only talks about monitoring with CPU, Data and Log percentage usage.
But, when I add new metrics, I also have an DTU percentage option:
I can't find any about this online. Is this essentially a summary of the other DTU-related metrics?