Hi MJrald,
These features are available with the premium tier of Azure Service Bus.
For more information, please refer to the following documentation.
https://learn.microsoft.com/en-us/azure/service-bus-messaging/private-link-service
https://learn.microsoft.com/en-us/azure/service-bus-messaging/service-bus-service-endpoints
If you have any further queries, please let us know we are glad to help you.