How does Google Cloud handle network isolation and routing between different VPCs and instances?

Google Cloud ensures network isolation between Virtual Private Clouds (VPCs) and instances through various mechanisms like firewall rules and subnet configurations within each VPC. VPC Peering establishes secure connections between different VPCs, enabling communication using internal IPs. Additionally, Shared VPCs simplify management by centralizing resources and allowing secure access from multiple VPCs. Cloud Router, with dynamic routing, manages traffic between VPCs, adapting to network changes. Load balancing services intelligently distribute traffic across instances to diverse VPCs. These strategies collectively guarantee secure isolation and efficient routing, vital for seamless operations and data integrity within Google Cloud infrastructure.

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