For example, before advertisers had to target the entire Saratov District, and from today they can easily include or exclude various areas inside the Saratov District (Balakovo, Engels, and others), as well as cities inside those areas.
With this new refined geotargeting advertisers can better adjust their advertising spend to their delivery conditions or business needs. For larger districts it can even make sense to apply different bidding strategies for main cities vs. smaller ones.
The new geotargeting is great! We urge you to try it out!