ServiceNow Portal – Customers Create and Manage Cases by Account

Hi everyone,

I’m working on a ServiceNow portal where customers should be able to create, view, and work on their own Cases, limited to their Account.

I’m looking for guidance on:

The recommended approach to build this portal (Service Portal vs Experience / UI Builder).

How to ensure users only see and access Cases related to their Account.

Best practices to enforce this with proper security (ACLs).

How to control which Case fields are visible or editable in the portal.

Any advice or best practices would be appreciated.