What is it?
Yandex DataLens is a business analytics service It lets you connect to various data sources, visualize data, create dashboards, and share the results. With Yandex DataLens, you can track your product and business metrics directly from data sources to make data-based decisions.
Documentation available here:
https://cloud.yandex.com/en/docs/datalens/
You are completely wrong.
So tell me where does your info come from?
And are you trying to say there are NO Ukrainian developers working for Yandex???
Before that, please provide sources that ysndey partially belongs to Ukraine and is not "russian anymore".