I post when browser makers announce their intent to ship features in web engines
botsin.space
botsin.space
The tl;dr is that the FedCM working group and the browser vendors are slowly working towards first-class APIs and UX for OAuth and authentication, so that federation will work when third party cookies are phased out.
Lots more details here:
https://groups.google.com/a/chromium.org/g/blink-dev/c/qqrG6...
Anyway, the point is, if you are interested in an evolving web API for your product, you should pay attention to what is happening among the big four: Chrome/Chromium, Edge, Safari, Firefox.
Great great bot here, even as is. The web is amazing.
https://chromestatus.com/newfeatures
on edit: it looks like canIuse says they are supported, and some lab demos seem to be working (in Mac on various browsers) even though Chrome's lab release notes reads to me like they have yet to even get started.
hen I see an intent to ship, seeing other browser indicators/status would make that first browser's intent to ship more actionable.