One network, many accounts — no peering required.
A central account owns the VPC; participant accounts launch straight into its shared subnets.
Network accountOwns VPC + subnets
Team A accountLaunches into shared subnet
Team B accountLaunches into shared subnet
The standard pattern in compliance-heavy landing zones (FedRAMP, FISMA, CMMC): one team secures the shared network, workload accounts never touch it.