You are designing the network architecture for your organization. Your organization has three developer teams: Web, App, and Database. All of the developer teams require access to Compute Engine…

Configuring a host project with a Shared VPC and separate service projects for each team allows the central network and security team to maintain full control over network resources like subnets, routes, and firewalls in the host project. This minimizes operational overhead by offloading network management from individual development teams, who can simply provision instances in their service projects using the pre-configured shared network.

Configuring separate VPCs for each team with HA VPN connections between them is overly complex, more expensive for intra-cloud communication, and does not centralize network control, as each VPC would require its own network management.

Configuring three separate Shared VPC host projects, each with a service project, defeats the purpose of centralizing network control and would significantly increase management overhead and complexity instead of minimizing it.

Configuring separate VPCs for each team and using VPC Network Peering would allow communication but would still distribute network control across multiple VPCs, requiring individual peering configurations and management for each connection, thus not providing centralized control over all network resources.