You are analyzing customer data for a healthcare organization that is stored in Cloud Storage. The data contains personally identifiable information (PII). You need to perform data exploration and…

The Cloud Data Loss Prevention (DLP) API is specifically designed to detect, classify, and de-identify sensitive data like PII through techniques such as redaction, tokenization, or format-preserving encryption. De-identifying PII before data exploration and preprocessing directly ensures the privacy of sensitive fields while allowing analysis.

Customer-managed encryption keys (CMEK) protect data at rest but do not de-identify the sensitive information; once the data is decrypted for processing or exploration, the PII remains in its identifiable form, failing to meet the privacy requirement during active use.

VPC Service Controls establish a security perimeter to prevent data exfiltration, enhancing overall security, but they do not inherently de-identify PII; data within the perimeter, when accessed for exploration, would still contain raw sensitive information.

Google-managed encryption keys, like CMEK, protect data at rest but do not de-identify PII; when the data is accessed for exploration and preprocessing, the sensitive fields would still be in their original, identifiable state.