the_order/docs/architecture/SOVEREIGNTY_LANDING_ZONE_SUMMARY.md

Cloud for Sovereignty Landing Zone - Executive Summary

Date: 2025-01-27
Management Group: SOVEREIGN-ORDER-OF-HOSPITALLERS
Status: Architecture Complete - Ready for Deployment

Overview

A comprehensive Cloud for Sovereignty landing zone architecture designed using Azure Well-Architected Framework principles, spanning all non-US commercial Azure regions to ensure data sovereignty, compliance, and operational resilience.

Key Metrics

• Regions: 7 non-US commercial Azure regions
• Management Groups: 11 hierarchical groups
• Policies: 5 compliance policies + 1 initiative
• Virtual Networks: 14 (7 hub + 7 spoke)
• Subnets: 42 total
• Security: 7 Azure Firewalls, 14 private endpoints
• Estimated Cost: $10,850-20,000/month (depending on environment)

Well-Architected Framework Compliance

✅ Cost Optimization

• Right-sized resources per region
• Reserved instance planning
• Cost allocation tags
• Budget alerts and governance

✅ Operational Excellence

• Infrastructure as Code (Terraform)
• Automated deployments
• Centralized logging
• Runbooks and playbooks

✅ Performance Efficiency

• Regional proximity for low latency
• CDN for global content delivery
• Auto-scaling capabilities
• Performance monitoring

✅ Reliability

• Multi-region redundancy
• Availability Zones
• Automated failover
• RTO: 4 hours, RPO: 1 hour

✅ Security

• Zero-trust architecture
• Defense in depth
• Data encryption (at rest and in transit)
• Identity and access management
• Security monitoring

Cloud for Sovereignty Features

Data Residency

• All data remains within specified regions
• Resource location policies enforced
• Storage geo-replication controls

Data Protection

• Customer-managed keys (CMK)
• Azure Key Vault with HSM
• Private endpoints for all services

Compliance

• GDPR compliance
• eIDAS compliance
• Regional compliance requirements
• Audit logging (90 days retention)

Operational Control

• Management group hierarchy
• Policy-based governance
• Role-based access control (RBAC)

Regional Deployment

Supported Regions

1. West Europe (Netherlands) - Primary region
2. North Europe (Ireland) - Secondary region
3. UK South (London) - UK workloads
4. Switzerland North (Zurich) - Swiss workloads
5. Norway East (Oslo) - Nordic workloads
6. France Central (Paris) - French workloads
7. Germany West Central (Frankfurt) - German workloads

Per-Region Components

• Hub Virtual Network (gateway, firewall, management subnets)
• Spoke Virtual Network (application, database, storage subnets)
• Azure Firewall (Standard SKU)
• Key Vault (Premium SKU with private endpoint)
• Storage Account (with private endpoint)
• Log Analytics Workspace

Management Group Hierarchy

SOVEREIGN-ORDER-OF-HOSPITALLERS
├── Landing Zones
│   ├── Platform
│   ├── Sandbox
│   └── Workloads
├── Management
│   ├── Identity
│   ├── Security
│   └── Monitoring
└── Connectivity
    ├── Hub Networks
    └── Spoke Networks

Compliance Policies

1. Allowed Locations: Restricts to non-US commercial regions
2. Deny US Regions: Explicitly denies US regions
3. Require Data Residency Tag: Tracks data residency
4. Require Encryption at Rest: Customer-managed keys
5. Require Resource Tags: Governance and cost management

Deployment Phases

Phase 1: Foundation (Weeks 1-2)

• Management group hierarchy
• Identity and access management
• Core networking
• Key Vault setup
• Log Analytics workspaces

Phase 2: Regional Deployment (Weeks 3-6)

• Primary region (West Europe)
• Secondary region (North Europe)
• Geo-replication
• Monitoring setup

Phase 3: Multi-Region Expansion (Weeks 7-10)

• Remaining 5 regions
• Regional failover
• CDN endpoints
• Traffic routing

Phase 4: Workload Migration (Weeks 11-14)

• Application migration
• Application networking
• Application monitoring
• Performance optimization

Phase 5: Optimization (Weeks 15-16)

• Cost optimization
• Performance tuning
• Security hardening
• Documentation

Quick Start

# 1. Load environment
source infra/scripts/azure-load-env.sh

# 2. Deploy landing zone
./infra/scripts/deploy-sovereignty-landing-zone.sh

# 3. Verify deployment
az group list --query "[?contains(name, 'az-')]"

Documentation

• Architecture: docs/architecture/CLOUD_FOR_SOVEREIGNTY_LANDING_ZONE.md
• Deployment Guide: docs/deployment/azure/SOVEREIGNTY_LANDING_ZONE_DEPLOYMENT.md
• Module Docs: infra/terraform/modules/regional-landing-zone/README.md

Success Criteria

• ✅ All 7 regions deployed
• ✅ Management group hierarchy established
• ✅ Compliance policies enforced
• ✅ Private endpoints configured
• ✅ Monitoring active
• ✅ Cost tracking enabled
• ✅ Security hardened

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Last Updated: 2025-01-27
Next Review: After Phase 1 deployment