Designing for security and compliance

Designing for security

Security in the cloud is a shared responsibility. Google is responsible for securing the underlying infrastructure, while customers are responsible for securing their data, applications, and access controls within Google Cloud. A secure design starts with a zero-trust model, which assumes no user or system is inherently trusted, even if they are inside the network perimeter. Every request must be authenticated, authorized, and encrypted.

Key principles include least privilege access, where users and services only get the minimum permissions needed to perform their tasks. This is managed through Identity and Access Management (IAM) policies that define who (identity) has what access (role) to which resource. Data must be protected both at rest (when stored) and in transit (when moving). Services like Cloud Key Management Service (KMS) manage encryption keys, and VPC Service Controls create secure perimeters around data to prevent it from being moved to unauthorized projects or services.

Networking security involves defining clear boundaries. A Virtual Private Cloud (VPC) network isolates your cloud resources. Firewall rules control traffic flow to and from instances, while Cloud Armor provides defense against denial-of-service and other web attacks at the network edge. Secure access to private resources without exposing them to the internet is achieved through Cloud VPN or Cloud Interconnect for hybrid connections, and Identity-Aware Proxy (IAP) for secure application access without a VPN.

Designing for compliance

Compliance means adhering to laws, regulations, and industry standards like GDPR, HIPAA, or PCI DSS. In Google Cloud, compliance is a shared effort. Google provides certifications for its infrastructure, but customers are responsible for configuring their cloud usage to meet the specific controls required by their compliance framework.

Designing for compliance involves knowing where your data resides and how it is processed. You must classify data based on its sensitivity and apply the correct controls. Use services that support data residency requirements, like choosing specific Google Cloud regions for storage. Implement strong access controls and audit trails to demonstrate who accessed what data and when. The Access Transparency logs provide records of actions taken by Google support personnel, which is crucial for many compliance audits.

Automation is key to maintaining compliance over time. Use Organization Policy Service to enforce constraints across your entire organization, such as preventing the creation of external IP addresses or restricting which cloud services can be used. Continuously monitor your environment with Security Command Center to detect misconfigurations or threats. Regularly review access logs and generate reports using Cloud Audit Logs to prove ongoing adherence to compliance requirements.