Plan multi-cloud and multi-region deployments with an interactive readiness checklist.
Last verified: April 2026
| Primary | Secondary | Provider | Distance |
|---|---|---|---|
| us-east-1 | us-west-2 | AWS | ~3,700 km |
| eu-west-1 | eu-central-1 | AWS | ~1,100 km |
| ap-northeast-1 | ap-southeast-1 | AWS | ~5,300 km |
| us-east-2 | us-west-1 | AWS | ~3,300 km |
| eu-west-2 | eu-north-1 | AWS | ~1,400 km |
| eastus | westus2 | AZURE | ~3,700 km |
| westeurope | northeurope | AZURE | ~750 km |
| southeastasia | eastasia | AZURE | ~2,600 km |
| uksouth | germanywestcentral | AZURE | ~650 km |
| canadacentral | centralus | AZURE | ~1,500 km |
| us-central1 | us-east1 | GCP | ~1,200 km |
| europe-west1 | europe-west4 | GCP | ~200 km |
| asia-east1 | asia-northeast1 | GCP | ~2,100 km |
| us-east4 | us-west1 | GCP | ~3,700 km |
| europe-west2 | europe-west3 | GCP | ~650 km |
Output will appear here...Your healthcare SaaS platform needs to expand from US-only to serve European customers while maintaining HIPAA and GDPR compliance. You work through the checklist and realize that you need to evaluate not just EU region availability but also data processing agreements, encryption key residency, and cross-border data transfer mechanisms for each provider. The checklist surfaces 6 compliance items you had not considered, preventing a potentially costly regulatory violation.
The Multi-Cloud Region Checklist provides an interactive planning checklist for deploying applications across multiple regions in AWS, Azure, and GCP. Multi-region deployments involve considerations for data residency, latency, disaster recovery, DNS routing, database replication, and cost. This tool walks you through each consideration with provider-specific guidance and checkboxes so you can track your planning progress and ensure nothing is overlooked when designing a multi-region architecture.
The checklist organizes multi-region planning into categories like networking, data replication, DNS, security, compliance, and cost. Each category contains provider-specific items with descriptions and status tracking. Progress is persisted to browser localStorage, allowing you to return across multiple planning sessions. The checklist dynamically adjusts visible items based on which providers you select.
Data residency requirements trump all other region selection criteria. If GDPR requires EU data storage, your region choice is constrained to EU regions on each provider. Check that every service you need is available in those specific regions before committing to an architecture.
Inter-region data transfer costs are the hidden killer of multi-region architectures. AWS charges $0.02/GB for cross-region transfer, Azure charges $0.02-0.05/GB, and GCP charges $0.01-0.08/GB depending on continents. A database replicating 1 TB/month cross-region costs $20-80/month just in transfer fees.
When comparing regions across providers, check not just service availability but also capacity constraints. Some newer regions on all three providers have limited instance type availability or lower quota defaults. Run a quota check on your target region before designing your architecture.
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