Best 3rd Party Attribution link for unity ads

Hello everyone!

I just released my small game and am looking to run about $50 of ads for it. When filling out the unity ads campaign section is asks me for a “Attribution links” I read the documentation for it and it says to use a 3rd party or in-house. I did some googling but I could not find any more information or any companies that offer this. I think I am just searching under the wrong name.

Any help would be great Thanks!

https://unityads.unity3d.com/help/advertising/s2s-install-tracking

Many of the suggested partners in the above link have free trail periods for their attribution services.

@MileSplit you can install your own hosted Matomo instance https://matomo.org/. It’s a privacy-aware GDPR-compliant analytics service that many Web Hosting companies offer through their admin interface where you can install it with a click.

That’s a completely free and permanently free solution.

Do we have to use approved third-party partners of unity?
Why we can not use our own URL?