These are tags that you define in your billing console which will be brought into your CUR file. For example, you can look up for costs per application, per environment or per team, all utilizing tags. This gives you the ability to translate your data to the way your teams think about their applications and get the most out of it. While we recommend having the tags set up before you create the CUR to allow this data to be picked up by the report and add an extra level of detail to your data, you can add cost allocation tags at any point.