The new console experience for AWS Cost Categories simplifies the Cost Categories creation workflows. The new user interface uses a split-view panel to improve the process of setting up Cost Categories rules; as well as to provide an interactive preview of the allocation of month-to-date estimated charges based on these rules. The split-view panel allows you to add or edit Cost Category rules; or visualize the effect of the rules on cost allocation, without leaving the consolidated view of all your rules in the rules table. The rules table gives you an overview of all of your Cost Categories rules, their relative prioritization, and the ability to search, filter, and reorder rules by changing their priority.
Source:: Amazon AWS