Comprehensive and Detailed Explanation From Exact Extract:
The best way to describe security responsibilities when using a Google Cloud service, especially a managed one like a managed AI service, is to invoke the Shared Responsibility Model.
This model clarifies that Google secures the underlying infrastructure (the hardware, data centers, and the service platform itself), while the customer (your organization) retains responsibility for security in the cloud, specifically: data, access controls (IAM), and operational monitoring.
Extracts:
"This division of duties is defined by the Shared Responsibility Model, a framework that clarifies the security responsibilities of both the cloud provider and the customer." (Source 3.2)
"While cloud providers secure the infrastructure, customers must take active steps to protect their applications, data, and access controls." (Source 3.2)
"The following areas are customer responsibilities as a user of any public cloud: Configuring Identity and Access Management (IAM) to ensure that the contents of your organization are accessed and modifiable by the appropriate personnel... Ensuring you have read all documentation to understand and follow best practices." (Source 3.5)
For Google Cloud, the customer is responsible for: "Managing user permissions and access controls using Cloud IAM... Encrypting sensitive data... Monitoring logs and security events using Cloud Audit Logs and Security Command Center." (Source 3.2)
Option C is incorrect because using PaaS/Managed Services does NOT transfer all security concerns to Google. The customer is still responsible for key areas.
Option B is the most comprehensive and correct answer as it immediately introduces the foundational concept (Shared Responsibility Model) and focuses on the most critical customer responsibilities: IAM (access controls), data procedures (upload/download), and monitoring logs (detective controls), all of which fall squarely under the customer's purview for a managed service.
