Migrate legacy SIEM Infra to Google Cloud

Supported in:

Google secops SIEM

This document describes how to perform a self-service migration to modernize your Google Security Operations SIEM from legacy infrastructure to Google Cloud. The migration ensures you are well positioned to benefit from the latest innovations in Google SecOps by unlocking Agentic Security Operations, greater reliability, privacy, top tier compliance posture, and newer capabilities like Emerging Threats, Dashboards, Data Access Controls, Security Validation, and Federation.

Which SIEM instance should be migrated?

Migrate your SIEM instance if it is any of the following types:

Not deployed in your Google Cloud project
OR Not using Google Cloud Authentication (Workforce Identity Federation / Cloud Identity)
OR Not using Google Cloud Identity and Access Management (IAM) for Role-Based Access Control (RBAC)

You don't need to migrate if your instance meets all of the following conditions:

Deployed in a Google Cloud project
AND Uses Workforce Identity Federation or Cloud Identity for authentication
AND Uses Google Cloud IAM to manage granular access permissions

Why migrate now?

Migrating to the new infrastructure unlocks several critical benefits for your organization:

Enhanced reliability and security: Leverages Google Cloud infrastructure to provide higher platform reliability, stronger privacy controls, and enhanced security controls with VPC Service Controls.
Granular access controls: Transition from homegrown RBAC to Google Cloud IAM, enabling very precise feature and data access permissions.
Agentic SOC capabilities: Unlocks new agentic capabilities and AI-driven security operations.
Comprehensive auditing: Integration with Cloud Audit Logs for enhanced visibility into product actions.
Compliance: Meet growing compliance requirements including CMEK, VPC Service Controls, FedRAMP, and regional data residency requirements.

Scope of migration

Infra	Legacy stack	Modern stack
Project hosting	Google owned project	Customer-owned Google Cloud project
Authentication	Legacy SIEM Authentication	Google Cloud Auth: Workforce Identity Federation (WIF) or Cloud Identity
Authorization	Legacy SIEM RBAC	Feature RBAC: Google Cloud IAM
Audit Logging	Limited internal logging	Cloud Audit Logs: Comprehensive Google Cloud logging

Before you begin

Prepare your Google Cloud environment before you start the migration:

Identify or create a Google Cloud organization and a Google Cloud project. Contact your Google Cloud administrator if you don't have the permissions to do so.
Link the project to the correct billing account, consistent with your Google SecOps contract.

Perform the Self-service Migration

Perform the following migration steps in order. These steps are designed to ensure no adverse impact to customers, including no data loss and no product downtime.

After migration

After migration, you gain the following enhanced Google SecOps capabilities:

Authentication: Your authentication service is upgraded to Cloud Identity or Workforce Identity Federation.
Authorization: You have granular authorization, based on Cloud IAM roles and permissions.
Audit logs: You have comprehensive logs that you can view in Cloud Audit Logs.