🚀 Full Analytics Stack Migration

AWS to Hetzner Cloud Infrastructure Optimization

Led the end-to-end migration of a production analytics stack from AWS to Hetzner Cloud, redesigning ETL pipelines, database infrastructure, and BI systems — reducing cloud costs by approximately 80%.

Stack: AWS → Hetzner Cloud · ETL Migration · PostgreSQL · Server Deployment · BI Migration · Infrastructure Optimization

📌 Project Overview

A client was operating their full analytics stack on AWS, incurring high recurring cloud costs for ETL, storage, compute, and database services.

The objective was to:

  • Reduce infrastructure expenses
  • Maintain reporting reliability
  • Migrate production workloads safely
  • Ensure zero data loss
  • Minimize reporting downtime

I owned and executed the complete migration.

🧩 Business Challenge

The AWS-based stack included:

  • ETL pipelines
  • Production databases
  • Reporting dashboards
  • Scheduled workflows
  • Automated triggers

The infrastructure was stable but significantly over-provisioned and cost-heavy for the client’s scale.

Migration risks included:

  • Data corruption
  • Downtime
  • Reporting delays
  • Performance degradation
  • Workflow breakage

🏗 Migration Strategy

1️⃣ Infrastructure Planning

  • Assessed AWS service dependencies
  • Designed equivalent architecture on Hetzner
  • Calculated compute, storage, and memory requirements
  • Planned phased migration to minimize downtime

2️⃣ ETL Pipeline Migration

  • Recreated ETL workflows in the new environment
  • Migrated transformation logic
  • Validated data consistency post-migration
  • Reconfigured scheduling and automation triggers

3️⃣ Database Migration

  • Migrated production databases
  • Ensured schema consistency
  • Optimized queries for new infrastructure
  • Conducted integrity checks

4️⃣ Dashboard & Reporting Migration

  • Reconnected BI dashboards to new database endpoints
  • Verified KPI accuracy
  • Conducted parallel validation between AWS and Hetzner environments

5️⃣ Performance & Monitoring Setup

  • Implemented logging and monitoring
  • Optimized server configuration
  • Tuned database performance
  • Ensured stable production readiness

📊 Results

✔ ~80% reduction in monthly cloud infrastructure cost

✔ Zero data loss during migration

✔ Minimal downtime during cutover

✔ Maintained reporting performance

✔ Improved infrastructure efficiency

💼 Business Impact

This migration significantly improved the client’s cost efficiency while preserving reporting reliability.

The optimized infrastructure:

Strengthened infrastructure ownership

Reduced operational overhead

Improved cost-to-revenue ratio

Created a scalable and controlled hosting environment