In addition to customizing your URL domainA domain is an attribute of an Okta organization. Okta uses a fully-qualified domain name, meaning it always includes the top-level domain (.com, .eu, etc.), but does not include the protocol (https). and hosted sign-page, you can customize the default Okta error page so that it is also consistent with your application. The Custom Error Pages tab of the Customization page provides an embedded HTML editor to help you get started. For detailed information on usage and set up, see the Customize the Hosted Error Pages guide.