Yes, absolutely. Amazon has been known to write PR/FAQs for internal services, hell, they’ve also been known to write FAQs (without the PR piece) for certain simpler internal services.
Do keep in mind there’s a template for this. From some quick googling, this seems like a pretty decent resource: Strategy Tool: Amazon’s PR/FAQ. A practical guide with two easy to use… | by Wendy-Lynn McClean | intrico.io | Medium