Any ... <answer_goes_here>'s credentials verified under "Test API credentials" in an Office365 app integration can allow Okta API integration with Office 365 - permissions which once successfully granted will be used by Okta used for Provisioning related tasks Solution: Okta Super Administrator

When using Okta Expression Language, which variable type results out of this Okta Expression? isMemberOfGroup("groupId") Solution: Array

Can you map the Okta user ID as an Office 365 Immutable ID?
Solution: Done via mappings, by pushing from Okta to Office 365: user.getInternalProperty("id")

Which is a / are best-practice(s) in a SAML 2.0 situation?
Solution: To not use SAML 2.0 and Provisioning via the same App instance in Okta, but integrate the same SP custom domain via two different app instances in Okta, one for SSO, via SAML 2.0 in this case, and one for provisioning on users

What does it mean: "Mapping Direction AD to Okta"?
Solution: Indicates a schema of attribute values flowing AD towards Okta's Apps directly, Okta just facilitating this end-to-end direct flow