Anonymous ID generation

[charlesmohapatra]

Hi team!
Let's say a new user drops on to my website where I have the system configured with Cloudflare and edge-sdk.

Now how does the anonymous ID generation happen? Since segment doesnot find the user in cloudFlare KV nor in Segment database, when it queries back origin, it injects analytics.js into the webpage and after the page loads, the script calls segment and generates the anonymousID?

Or does it generate the ID in the edge-sdk itself and sets it as a cookie on the server-side when sending back the response? Basically I wanted to know the process of anonymousID generation.