In which system can you see what key phrases were used to pay on the site?

Question

CRM

Maybe in some end-to-end analytics system or somewhere else

Answer 1

You need to set up a payment goal (for example, visiting the "Thank you for your purchase" page), and everything will be visible in both Yandex Metrica and Google Analytics.

Answer 2

To do this, you need to set up goals in Google Analytics and Yandex Metrica. When you go to the "Thank you for your purchase" page, it fulfills the goal and then you can choose which keywords the conversion occurred for
. If you use CRM, then you can send offline conversions by the deal closing trigger. To do this, you need to get Yandex ID, Google id
If you have Amo crm, then you can use ready-made integrations https://www.youtube.com/watch?v=6q2Dw3ttemA