What does it depend on when rating stars or the name of the author are shown in Google search results under popular sites?

Question

Google

In the search results under popular sites, asterisks are shown and, sometimes, the author is indicated. What does it depend on, and how can this be repeated? If I understand correctly, then you need to somehow link your Google + account and have enough positive reviews?

Answer 1

A good SEO specialist does not shine, it works simply, and the client rejoices.
They pay for this, not for PR.

Answer 2

Additional information in Google and Yandex snippets can be indicated by micro-markup, as well as in webmaster tools.
Mark up the relevant parts of web pages so that our system successfully recognizes your content. More...
Use the Marker to highlight event data. Visit the structured data page and check if the markup content was successfully crawled.
Mark up content in the body of each web page. More...
Visit the Site Navigation section of the Structured Data page and check if the markup content was successfully crawled.
Mark up the relevant parts of web pages so that our system successfully recognizes your content. Learn more...
Visit the structured data page and check if the tagged content was successfully crawled.
Confirm that you are the author of the content. To do this, link it to your profile. Learn more...
In the Author Statistics section, you can see author profiles associated with your content.

Answer 3

Google the word "snippets".

Answer 4

Asterisks, for example, can be added like this schema.org/AggregateRating , in this example, this is the rating of comments in G +
author - yes, this is G +, how to do it right, see Google help
"have enough positive reviews" - not necessary, but not a fact that your G+ account will be shown in the search results