They do do some IT consulting, among other things, but the vast majority of their workforce is providing cheap sales & support staff to FAANG companies - these companies are famous for having well-remunerated staff, with generous benefits, hired through protracted interview processes. In reality most people actually working on their products are hired cheaply through vendors like Accenture and Cognizant.
That's fair (though I can't edit now) - it's certainly not exclusively FAANG, though it is a significant percentage. Public contracts may be a similar or larger percentage.
I worked a lot with Accenture, enterprise context.
https://www.nytimes.com/2021/08/31/technology/facebook-accen...
Not for engineering work.
Vendors and Contractors typically have support roles like internal and external customer support or IT support. Processes that can't be automated will typically be sent to contractors until it's expensive enough that FTE automate it.
Both were terrible.