> For the complete documentation index, see [llms.txt](https://swallow-1.gitbook.io/swallow/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://swallow-1.gitbook.io/swallow/test/impact-testing.md).

# Impact Testing

You can impact test in two main ways:

**Against existing customer profiles.** 

You can upload a CSV of all your customer profiles (tens of thousands if you like) and run these against your pricing project changes. 

**Against imagined customer profiles.** 

You can upload a CSV of different customer profiles and cohorts (tens of thousands if you like) and run these against your pricing project changes for this idealised audience.

In either case, this will create a distribution of prices that you can see the average result and the validity (i.e. percentage of quotes that are not excluded).  

You can download these results as a CSV for offline analysis. 

You can also pick any test and run it within the build tab to see the breakdown of each step of the pricing process. 


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