Please provide support for additional authentication providers including OpenID. At the minimum, please consider supporting the same set of OpenID providers as is currently supported for D365FO Retail eCommerce. Ref: https://docs.microsoft.com/en-us/dynamics365/unified-operations/retail/dev-itpro/configure-authentication-providers ,

We are encountering resistance from potential D365FO customers (especially those who are not already Azure and/or O365 customers) due to having only Azure AD as the authentication provider.