We most certainly do support multiple identity providers! :)
If you have multiple verified domains, you can have a different identity provider for each domain but you can't have multiple identity providers for one verified domain.
So the relation here is one to one.
One domain = one IdP.
Update: That's a wrap! Thanks so much for your questions. If you didn't make it for the live AMA, not to worry. Add your questions below and I will get to them ASAP. Hello Atlassian Community...
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