VPC (Virtual Private Cloud) is the network foundation for all Google Cloud resources: a global, software-defined network.
What is VPC?
Google Cloud VPC is the virtual network where all your GCP resources communicate. Unlike other cloud providers, a GCP VPC is global: you can create subnets in any region, all belonging to the same VPC with private connectivity.
This global architecture simplifies multi-region deployments. VMs in Europe can reach VMs in Asia via private IPs without configuring VPC peering or transit gateways. Firewall Rules are also global and can be based on service accounts or tags.
VPC integrates with all GCP networking services: Cloud Load Balancing for traffic distribution, Cloud NAT for outbound connectivity without public IPs, Private Google Access for API access over private networks.
Core Features
- Global network: A VPC spans subnets across all regions without requiring additional peering for internal connectivity.
- Global firewall rules: Stateful rules based on IP ranges, tags, or service accounts, including hierarchical policies at the organization or folder level.
- Hybrid connectivity: Cloud VPN for encrypted internet connections and Cloud Interconnect for dedicated or partner connections with high bandwidth.
- Shared VPC: Centralized network management across multiple projects for clear separation of network and workload responsibility.
- Traffic control: Cloud NAT, Private Google Access, and Private Service Connect for secure connectivity without public endpoints.
Common Use Cases
Multi-Tier Application Architecture
An e-commerce company structures its VPC into public, application, and database subnets. Frontend VMs receive public IPs, application servers communicate only internally, databases are completely isolated. Firewall Rules enforce the separation.
Hybrid Cloud with On-Premises
A manufacturing company connects its datacenter to GCP via Cloud Interconnect. Production systems remain on-premises, analytics runs in BigQuery. Both environments communicate via private IPs without internet exposure.
Shared VPC for Enterprise Governance
An enterprise group uses Shared VPC. The network team centrally manages VPC, subnets, and firewall rules. Project teams deploy resources in their own projects but use the central network. This separates network and workload responsibility.
Microservices Isolation on GKE
A SaaS platform operates GKE clusters in a VPC. Network Policies isolate microservices from each other. Private Service Connect enables secure access to Cloud SQL and other managed services without public endpoints.
Multi-Region for Disaster Recovery
A financial services company deploys in europe-west1 (primary) and europe-west4 (DR). Both regions use the same VPC with regional subnets. Global load balancers distribute traffic, with automatic failover during a region outage.
Benefits
- Global architecture: A single VPC instead of regional networks significantly simplifies multi-region deployments.
- Cost-efficient: VPC, subnets, and internal communication are free, with costs targeted at egress and add-on services.
- Flexible hybrid connectivity: From simple Cloud VPN to high-bandwidth Interconnect for different requirements.
- Fine-grained security: Global, identity-based firewall rules instead of purely IP-based rules.
- Enterprise governance: Shared VPC separates network responsibility from workload teams.
Integration with innFactory
As a certified Google Cloud partner, innFactory supports you with network architecture on GCP: from VPC design through hybrid connectivity to security best practices.
Contact us for a network consultation.
Available Tiers & Options
Standard Tier Networking
- Lower costs
- Regionally optimized
- For regional workloads
- No global premium network
Premium Tier Networking
- Google's global backbone
- Lowest latency
- Global load balancers
- Higher egress costs
Typical Use Cases
Technical Specifications
Frequently Asked Questions
What is Google Cloud VPC?
VPC (Virtual Private Cloud) is a global software-defined network for all Google Cloud resources. A VPC can contain subnets in all regions and enables private communication between GCP services without public IPs.
What distinguishes GCP VPC from AWS VPC?
GCP VPC is global, not regional. A single VPC can contain subnets worldwide. Firewall Rules are also global and can be based on tags or service accounts. This significantly simplifies multi-region deployments.
How do VPC Firewall Rules work?
Firewall Rules are stateful and can be applied to IP ranges, tags, service accounts, or network tags. They apply globally within the VPC. Hierarchical Firewall Policies enable governance at organization or folder level.
How much does using VPC cost?
VPC itself, subnets, and internal IP addresses are free. Costs arise from egress traffic, unused external IP addresses, and certain add-on features like Cloud NAT. Current prices are available in the official pricing list.
How do I connect VPC to on-premises?
Cloud VPN provides encrypted IPsec connections over the internet. Cloud Interconnect offers dedicated or partner connections with significantly higher, configurable bandwidth reaching well into the multi-hundred-Gbps range. Both enable hybrid connectivity with private IPs.
Note: All product information on this page has been compiled with care, but is provided without guarantee and may be outdated or incomplete. Cloud services evolve rapidly — features, pricing, SLAs, and availability change frequently. Authoritative and up-to-date information can only be found on the official product page of Google Cloud (official documentation). This page does not represent an offer by Google Cloud.
