Engineering at Meta
When I was researching how Facebook monitor and control the access to their portal with respect to the concept of a "shim" I came across Engineering at Meta.
I must admit that I am a little bemused about what the Facebook/Meta website/blog is all about. They claim are a technical news resource for engineers. It seems that they are more like a recruiting agency for those who want to work for Meta.
When I made an Internet search for the Facebook Shim I came across a version of https://engineering.fb.com/2012/09/14/security/a-faster-better-link-shim/ By Ari Chivukula
Ari Chivukula
Ari Chivukula seems to be a key member of the Facebook team. Making searches for him will reveal this.
Not being a fan of Facebook I can't really comment.