Re:Ask HN: Is it better to centralize authentication at a se...
by throwanem on Wednesday April 20, 2016 @02:37PM
(#11536673)
"Centralized" doesn't mean you rely on Github or Google or Microsoft or whoever, although you can. It means you handle authentication and authorization with a service that does that job, instead of shared secrets or "well, it's on this VLAN, it must be OK". You can run your own OAuth2 (or whatever) provider pretty easily these days.
That's one of the reasons I've always been skeptical of centralised anything. It's another potential group to fall out with or point of weakness.