smom-dbis-138/docs/deployment/CLOUD_FOR_SOVEREIGNTY_LANDING_ZONE.md

Cloud for Sovereignty Landing Zone - Multi-Region Architecture

Overview

This document outlines the Well-Architected Framework implementation for a Cloud for Sovereignty landing zone across all Azure commercial Non-US regions.

Architecture Principles

1. Data Sovereignty: Data remains within specified regions
2. Compliance: Meets regional regulatory requirements
3. Resilience: Multi-region deployment for high availability
4. Scalability: Supports growth across regions
5. Cost Optimization: Efficient resource utilization

Management Group Structure

Root Management Group
└── Landing Zones (Landing Zones)
    ├── Platform (Platform)
    │   ├── Management (Management)
    │   ├── Connectivity (Connectivity)
    │   └── Identity (Identity)
    └── Workloads (Workloads)
        ├── Production (Production)
        ├── Non-Production (Non-Production)
        └── Sandbox (Sandbox)

Non-US Commercial Regions

Europe

• Belgium Central (belgiumcentral)
• France Central (francecentral)
• France South (francesouth)
• Germany North (germanynorth)
• Germany West Central (germanywestcentral)
• Italy North (italynorth)
• Netherlands (northeurope)
• Norway East (norwayeast)
• Norway West (norwaywest)
• Poland Central (polandcentral)
• Spain Central (spaincentral)
• Sweden Central (swedencentral)
• Switzerland North (switzerlandnorth)
• Switzerland West (switzerlandwest)
• UK South (uksouth)
• UK West (ukwest)
• West Europe (westeurope)

Asia Pacific

• Australia East (australiaeast)
• Australia Southeast (australiasoutheast)
• China East (chinaeast)
• China North (chinanorth)
• East Asia (eastasia)
• India Central (centralindia)
• India South (southindia)
• India West (westindia)
• Indonesia Central (indonesiacentral)
• Japan East (japaneast)
• Japan West (japanwest)
• Korea Central (koreacentral)
• Korea South (koreasouth)
• Malaysia West (malaysiawest)
• New Zealand North (newzealandnorth)
• Southeast Asia (southeastasia)

Middle East & Africa

• Israel Central (israelcentral)
• Qatar Central (qatarcentral)
• South Africa North (southafricanorth)
• South Africa West (southafricawest)
• UAE Central (uaecentral)
• UAE North (uaenorth)

Americas (Non-US)

• Brazil South (brazilsouth)
• Brazil Southeast (brazilsoutheast)
• Canada Central (canadacentral)
• Canada East (canadaeast)
• Chile Central (chilecentral)
• Mexico Central (mexicocentral)

Resource Organization

Per-Region Structure

Each region follows the Well-Architected Framework structure:

{cloud}-{env}-{region}-rg-{type}-{instance}

Example: az-p-we-rg-comp-001 (Azure, Production, West Europe, Resource Group, Compute, Instance 001)

Resource Group Types

• Network (rg-net-001): Virtual networks, subnets, NSGs, Application Gateways
• Compute (rg-comp-001): AKS clusters, VMs, Container Instances
• Storage (rg-stor-001): Storage accounts, backups
• Security (rg-sec-001): Key Vaults, Security Centers
• Monitoring (rg-mon-001): Log Analytics, Application Insights
• Identity (rg-id-001): Managed identities, Azure AD resources
• Terraform State (rg-tfstate-001): State storage

Deployment Strategy

Phase 1: Foundation

1. Management Group hierarchy
2. Subscription organization
3. Policy definitions and assignments
4. Role-based access control (RBAC)

Phase 2: Core Infrastructure (Per Region)

1. Resource Groups (all types)
2. Virtual Networks and connectivity
3. Key Vaults
4. Log Analytics Workspaces
5. Storage accounts

Phase 3: Compute Resources (Per Region)

1. AKS clusters
2. Node pools (validators, sentries, RPC)
3. Container registries

Phase 4: Application Deployment

1. Besu network components
2. Monitoring stack
3. Application gateways
4. Load balancers

Compliance & Sovereignty

Data Residency

• All data stored within specified region
• No cross-region data replication (unless explicitly configured)
• Regional compliance certifications

Security

• Regional Key Vaults
• Regional identity providers
• Network isolation per region
• Regional monitoring and logging

Cost Management

Tagging Strategy

• Environment: prod, dev, test, staging
• Region: region code
• CostCenter: Blockchain
• Project: DeFi Oracle Meta Mainnet
• ManagedBy: Terraform

Budgets

• Per-region budgets
• Per-environment budgets
• Alert thresholds

Monitoring & Governance

Centralized Monitoring

• Log Analytics Workspaces per region
• Centralized dashboard
• Cross-region metrics aggregation

Policy Enforcement

• Naming conventions
• Resource location restrictions
• Tag requirements
• SKU restrictions

Next Steps

1. Create management group structure
2. Create subscription structure
3. Deploy foundation resources
4. Deploy per-region infrastructure
5. Deploy application components
6. Configure monitoring and governance