Which statement is true regarding multi-tenant behavior?

The statement that configurations are isolated per customer is accurate in the context of multi-tenant behavior. In a multi-tenant architecture, each customer (or tenant) has its own configurations and data that are kept separate from those of other customers. This isolation ensures that the unique needs of each tenant can be met without interference from or exposure to others.

This approach enhances security, as sensitive information remains protected, reduces the risk of data breaches, and allows for customized configurations to suit varying customer requirements. Furthermore, it enables administrators to manage each tenant's environment independently, ensuring that changes or updates in one tenant do not affect others.

Regarding the other options: sharing resources across customers would defeat the purpose of multi-tenancy, where isolation is crucial. Identical access permissions across all customers would undermine the customization typically necessary for different organizations. Lastly, the inability to isolate data by tenant permissions contradicts the core principle of a multi-tenant architecture, which relies on robust isolation mechanisms to safeguard tenant data.