This chapter covers the core features and capabilities of Multi-Cloud Networking Guide.
This product provides production-ready Terraform configurations for connecting AWS, Azure, and GCP networks. Whether you need a simple VPN between two clouds or a full mesh with service discovery, these templates handle the complex networking plumbing so you can focus on workloads.
Every configuration is extensively commented with the "why" behind each setting, including MTU considerations, BGP ASN selection, and failover behavior.
| File | Purpose |
|---|---|
terraform/providers.tf | Provider configuration for AWS, Azure, and GCP |
terraform/variables.tf | Input variables with validation and defaults |
terraform/aws-transit-gateway.tf | AWS Transit Gateway with VPN attachments |
terraform/azure-vnet-gateway.tf | Azure VPN Gateway with BGP configuration |
terraform/gcp-cloud-vpn.tf | GCP Cloud VPN (HA) with Cloud Router |
terraform/cross-cloud-dns.tf | DNS forwarding across cloud boundaries |
terraform/outputs.tf | Cross-cloud connection status outputs |
| Document | Description |
|---|---|
docs/architecture.md | Reference architecture with topology diagrams |
docs/vpn-connectivity-guide.md | VPN tunnel setup, BGP, and failover design |
docs/dns-management.md | Cross-cloud DNS resolution patterns |
docs/security-considerations.md | Encryption, key rotation, and access control |
docs/scaling-guide.md | Bandwidth planning and performance tuning |
| File | Description |
|---|---|
scripts/connectivity_validator.py | Validate VPN tunnel and BGP status |
scripts/latency_estimator.py | Estimate cross-cloud latency and bandwidth costs |
examples/aws-azure-vpn.tfvars | AWS-Azure VPN tunnel configuration |
examples/three-cloud-mesh.tfvars | Full three-cloud mesh configuration |
Follow this guide to get Multi-Cloud Networking Guide up and running in your environment.
az login)gcloud auth application-default login)# Initialize Terraform with all three providers
cd terraform/
terraform init
# Deploy AWS-Azure VPN connection
terraform plan -var-file=../examples/aws-azure-vpn.tfvars
terraform apply -var-file=../examples/aws-azure-vpn.tfvars
# Validate connectivity
python ../scripts/connectivity_validator.pyGet the full Multi-Cloud Networking Guide and unlock everything.
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