<PackageReference Include="Microsoft.Identity.Client" Version="4.89.0" />

Microsoft.Identity.Client.Instance.Discovery.KnownCloudEntry

sealed class KnownCloudEntry
A single canonical "known cloud" record: the authority host aliases, preferred network/cache hosts, and the (bare) FIC token exchange audience.
public string[] Aliases { get; set; }

public string FederatedCredentialAudience { get; set; }

The FIC token exchange audience URI, stored WITHOUT the /.default suffix. null for clouds without a known token exchange application.

public bool IsPublic { get; set; }

true only for the public (commercial) cloud; used by IsPublicEnvironment.

public string PreferredCache { get; set; }

public string PreferredNetwork { get; set; }

public KnownCloudEntry()