How can customers implement a Zero Trust architecture in OCI?

Implementing a Zero Trust architecture in Oracle Cloud Infrastructure (OCI) is fundamentally about enhancing security by not implicitly trusting any user or device, regardless of whether they are inside or outside the network perimeter. Therefore, enforcing strict access controls and monitoring is essential to this approach.

This method includes implementing comprehensive policies that require verification of every request for access to resources. By leveraging features such as identity and access management (IAM) policies, customers can ensure that only authorized users can access specific resources. This involves continuous authentication, authorization, and validation of security configurations to minimize risks associated with insider threats and compromised credentials.

In addition to access controls, monitoring plays a critical role. By continuously tracking user activities and resource usage, organizations can detect and respond to suspicious behaviors in real-time. This further strengthens the Zero Trust model by ensuring that any anomalies can be acted upon swiftly.

The other options do not align with the principles of Zero Trust. Allowing open access to all resources undermines the security model by not verifying users and devices before granting access. A single sign-on system can enhance user experience but may not provide the granular, per-resource access control required in a Zero Trust environment. Restricting resources to a single region does not directly pertain to trust policies or access