Google is moving towards a more transparent policy; the company announced an identity verification policy back in 2018 for political advertisers, but now it’ll be applied to all advertisers.
When advertisers buy ads from Google, they’ll be asked to complete a verification program which includes submission of business documents, personal identification and so on. This will allows users to find out more about why they’re seeing an ad or who is the advertisers behind these ads.
However, this is not something that can be achieved overnight — Google pointed out that it could take a few years to completely verify all their advertisers, and that the company will start its verification process in phases in the U.S before it expands to other countries.