How does Similarweb classify traffic from different SERP Features?

Google’s SERP (Search Engine Results Page) presents many different types of content, or SERP Features, in response to a user's query.

A large portion of digital search traffic - both organic and paid search - comes from clicks on SERP Features, instead of standard organic and paid search results. Below, you'll find a guide to how Similarweb classifies traffic resulting from clicks on different Google SERP features.