If your GCP infrastructure projects are all under the same Organization, you can run Cloud Discovery & Visibility (CDV) on all Projects in the Organization at the same time.
Doing so requires you to do the following in GCP:
Set up roles with the permissions necesssary for CDV to perform Organization-level discovery and visibility.
Assign those roles to the service account used by CDV to perform discovery and visibility on GCP infrastructures.
Important: When you add a project to the Organization, you must make sure that
the new project uses the Organization's policy. Otherwise, it won't be discovered by CDV
during Organization-level discovery and visibility. For more details, see Making sure new Projects in a GCP Organization can be discovered.
Note: These instructions assume you are using GCP's management tools to create and manage
the architecture of your GCP infrastructure. A full discussion of these tools is beyond
the scope of this guide.