Disagreements between metrics and analytics

Question

Yandex

Tell me, maybe there is a good analysis of the differences in the reports of Yandex and Google counters? I used to always use analytics, and recently I set a metric, I look at the results for an identical time period - they are quite different. Not only in terms of the number of uniques, for example, but also in terms of traffic sources.

Answer 1

Recently I worked with the calculation in Google Analytics, here it is written how they think and why it is so. As for Yandex, I can’t say, but there are some answers here.