Do You Need a Public or Private Endpoint?
When you create an Oracle Analytics Cloud instance, you specify how you want to access your service: through a public internet accessible endpoint or a private endpoint.
After you've created Oracle Analytics Cloud, you can't switch from a public endpoint to a private endpoint (or the other way around). So it's important to decide what type of access your organization needs and complete the required prerequisites before you start. See Prerequisites for a Public Endpoint and Prerequisites for a Private Endpoint.
If you're not sure, see About Public Endpoints and Access Control Rules and About Private Endpoints.