GCP and AWS both support sharing a single VPC across multiple GCP projects / AWS accounts. See e.g.: https://aws.amazon.com/blogs/networking-and-content-deliver

GCP and AWS both support sharing a single VPC across multiple GCP projects / AWS accounts. See e.g.: https://aws.amazon.com/blogs/networking-and-content-delivery/vpc-sharing-a-new-approach-to-multiple-accounts-and-vpc-management/ https://aws.amazon.com/blogs/networking-and-content-delivery... It's not for the faint of heart though. You need to allocate subnets to individual applications (with relevant capacity planning concerns) plus support is sometimes spotty (e.g. EKS doesn't support it last time I checked). Not worth doing until you have several teams trying to use the same VPC and stepping on each others' toes.