JencoMart, a global retailer with over 10,000 stores in 16 countries, is migrating several critical applications to Google Cloud Platform (GCP). The company has introduced a policy to reduce carbon output by 50% over the next 5 years and aims to decrease its on-premises footprint. Currently, all applications are hosted in 4 data centers, with customer data managed across Oracle and PostgreSQL databases. The security team requires all GCP infrastructure to be deployed using a least privilege model with separation of duties for administration between production and development resources. What Google domain and project structure should you recommend?