The SubdomainConfig datatype includes various settings.

Table: SubdomainConfig

primarySubdomainstringyes The primary subdomain of the organization.
secondarySubdomains[string]yes The secondary subdomains of the organization.
enforceSubdomainsstringyes EnforceSubdomain, if set to true the organization can only be accessed by the subdomain, otherwise it can also be accessed directly at the cluster domain url.

[a] Some arguments may be required, as indicated in this column. For some fields, this column indicates that a result will always be returned for it.