FedCM Multi IDP support

[npm1]

Request for position on an emerging web specification

• WebKittens who can provide input: @johnwilander maybe (Apple has not been very involved in the FedID CG).

Information about the specification

• Title: FedCM with multiple IDP support
• URL:
• GitHub repository: https://github.com/fedidcg/FedCM
• Explainer (if not README.md in the repository): https://github.com/fedidcg/FedCM/blob/main/proposals/multi-idp-api.md

Design reviews and vendor positions

• TAG Design Review: FedCM multi IDP support w3ctag/design-reviews#803
• Mozilla standards-positions issue: FedCM Multi IDP Support mozilla/standards-positions#730

Anything else we need to know

Hey, I am requesting standards position on the FedCM API multi IDP support. The explainer is up from GitHub and is based on a bunch of discussions in the FedID CG. The initial FedCM API had positive signal, but filing a separate issue for this substantial addition.

[marcoscaceres]

Closing in favor or #309 as we have never given a position of the actual FedCM spec.