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Solution Blueprint: The Path from Public Cloud to Sovereign Cloud

In the post-cloud era, "Cloud Repatriation"—moving workloads from expensive public clouds back to high-performance bare-metal architectures—has become the strategy of choice for enterprises seeking extreme cost efficiency.

This document breaks down a real-world Cross-Border Payment scenario, detailing how the Cyberun architecture eliminates the "Traffic Tax" and "Vendor Lock-in" of hyperscalers.

Scenario Context

Target Profile: Payment Gateways or High-Frequency Trading systems processing trans-Atlantic transactions. Typical Pain Points:

  1. The Egress Tax: Cross-region data replication (e.g., Frankfurt to Virginia) generates egress fees accounting for over 30% of the total bill.
  2. IOPS Bottlenecks: Managed Database (RDS/Aurora) fees grow linearly with IOPS, and "Noisy Neighbors" cause latency jitter.
  3. Compliance Black Box: Difficulty in proving exact physical data isolation to EU regulators.

Reference Architecture

This solution adopts a "Hybrid Sovereign Cloud" topology, utilizing the Aegis cluster (Germany) and Destroyer cluster (US) to replace legacy public cloud regions.

Architecture Evolution

graph TD
    %% Style Definitions: Professional High Contrast
    classDef public fill:#f5f5f5,stroke:#9e9e9e,stroke-width:2px,stroke-dasharray: 5 5,color:#616161;
    classDef cyberun fill:#e3f2fd,stroke:#1565c0,stroke-width:2px,color:#000;
    classDef highlight fill:#fff8e1,stroke:#fbc02d,stroke-width:2px,color:#000;

    subgraph Legacy ["Legacy: Public Cloud (Opaque & Costly)"]
        direction TB
        ALB["Cloud Load Balancer"]:::public
        VM["Virtual Machines"]:::public
        DB_Mgd["Managed RDS (Billed by I/O)"]:::public
        NAT["NAT Gateway (Cost Center)"]:::highlight

        ALB --> VM
        VM --> DB_Mgd
        VM -.->|$/GB| NAT
    end

    %% Migration Path
    NAT -.->|GitOps Migration| HAP

    subgraph Target ["Target: Cyberun (Transparent & Controlled)"]
        direction TB
        HAP["HAProxy + GeoDNS"]:::cyberun
        K8s["Bare Metal K8s (Dedicated Cores)"]:::cyberun
        CNPG["CloudNativePG (Local NVMe)"]:::cyberun
        WG["WireGuard Mesh (Free Internal Traffic)"]:::cyberun

        HAP --> K8s
        K8s --> CNPG
        K8s == "Zero Egress Fees" ==> WG
    end

Implementation Roadmap

Phase 1: Infrastructure Provisioning (Day 0-2)

Using our Ansible Automation Platform, bare-metal nodes are delivered across continents within 48 hours.

  • Network Disintermediation: Establishing a trans-Atlantic WireGuard full-mesh tunnel replaces expensive Direct Connect circuits.
  • Performance Unlocked: Deploying Rook-Ceph clusters leverages raw NVMe performance without artificial IOPS throttling.

Phase 2: Data Liberation (Day 3-5)

Leveraging CloudNativePG (CNPG) to build a PostgreSQL cluster compatible with public cloud databases.

  • CDC Sync: Using Debezium to capture real-time data changes from the source (RDS).
  • Dual-Track Validation: Running 24-hour traffic mirroring to verify 100% data consistency.

Phase 3: Traffic Switchover (Day 7)

Updating GeoDNS records to seamlessly switch specific user traffic to Cyberun's Aegis cluster.

TCO Optimization Analysis

Based on a typical model of 50TB monthly traffic and high-concurrency DB operations:

Cost Item Public Cloud Cyberun (Bare Metal) Savings
Compute $12,000 (Shared vCPU) $4,500 (Physical Cores) 62%
Database $8,500 (I/O + Storage) $1,200 (Hardware Only) 85%
Network $5,000 (NAT/Egress Fees) $0 (Included) 100%
Total Monthly **$25,500** $5,700 77%

Want to assess if your architecture is ready for "Cloud Repatriation"? Contact a Solution Architect for a free architectural audit.