To quote the first line of the website:
> A Free-as-in-Beer distribution of the open source software of Chef Software Inc. See goals for details, or follow our blog for updates on the project.
I'm pretty sure glassdoor is a conspiracy by FAANG executives to confuse their employees. If you believe these numbers you will not be able to get what you deserve when negotiating comp at these companies.
I helped make https://www.Levels.fyi - a lot of folks reference our site as being the most accurate for FANG compensation. I would also check PayScale, Paysa, Blind, etc