Good tag hygiene is critical to accurate cost reporting. Yotascale™ software provides the ability to identify untagged AWS resources and then define auto-tagging policies to properly tag those resources.
An example would be to find all untagged EBS volumes. To find these you would do the following...
Steps to complete:
Navigate to the Tag Management screen
You should default navigate to the "Search" tab, else navigate to the "Search" tab
Create a new saved search with the following parameters