Google Virtual Private Cloud (VPC)

VPC provides networking functionality to Compute Engine virtual machine (VM) instances, Google Kubernetes Engine (GKE) containers, and App Engine Flex environment.

Key Features

• Global VPC: A single VPC can span multiple regions (unlike AWS/Azure where VNet/VPC is regional).
• Subnets: Regional resources.
• Firewall Rules: Global rules to control traffic.

Use Cases

• Network Isolation: Secure your cloud resources.
• Hybrid Connectivity: Connect to on-prem via Cloud VPN or Interconnect.
• Shared VPC: Share a VPC across multiple projects.

Key Concepts

• Shared VPC: Allows an organization to connect resources from multiple projects to a common VPC network.
• VPC Peering: Connect two VPC networks.
• Private Google Access: Allow VMs with internal IPs to reach Google APIs.