New ask Hacker News story: Ask HN: Books/Presentations on Google/Meta's internal sw infra/processes?

Ask HN: Books/Presentations on Google/Meta's internal sw infra/processes?
3 by throwawaybbq1 | 0 comments on Hacker News.
I've heard that unlike most companies that cobble together software dev systems by mashing disparate products (confluence, slack, jira, github, terraform, etc.), opensource pieces (ELK, Prometheus, argo-cd, etc.) and software-defined-infra (cloud providers), both Google and Meta have well integrated, bespoke infra for all aspects of software development. Is there a book or blog or some reference to how this works? Is it really a thing of beauty and efficiency or you don't really miss it once you leave?