Source: https://assets.ctfassets.net/oxjq45e8ilak/4sL2AcvstNBsrYGYNZDDfY/105cd352b08cad5b77410fe5479b7384/Federico_Fregosi_Landing_Zones_on_GCP__how_to_boostrap_your_Google_Cloud_Platform_environment_at_scale_2020_11_30_17_00_45__.pdf