Hey all, is there a way to allow federated login via slack?

Hi Oded, This is not something that can be done directly through slack. You can find more information about SSO and GoodData here: https://help.gooddata.com/pages/viewpage.action?pageId=86797125

Just out of my curiosity - Slack seems to use Open ID Connect. Would it work with GoodData Cloud / GoodData.CN, @Peter Plochan / @Robert Moucha?

Seems that it can behave as standard OIDC provider, so yes, it would work with Cloud/CN. https://api.slack.com/authentication/sign-in-with-slack