Inside Hillary Clinton’s Outrage Machine, Allies Push the Buttons

Astroturfing is a very wide category, so the differences are in the details.

The article you linked to concerns sockpuppets which support Russia's goals.

There is no mention of Shareblue's use of sockpuppets. Shareblue does not hide its affiliation. It appears to be more of a talking points network, and to support a political party's goals.