System Integration Architecture for ERP, eCommerce, and High-Load Systems
Practical, battle-tested insights on integrating ERPs, APIs, and distributed systems — written by Artemii Karkusha.
Trusted on complex integration projects
Multi-brand, multi-market, high-load environments
What I Do
Specialized expertise in building and optimizing complex integration systems for enterprise eCommerce and B2B platforms.
ERP ↔ eCommerce Integrations
Real-time, cache-aware systems
- Pricing, inventory, orders, customers
- Quote engines with persistent caching
- Multi-warehouse MSI mapping
Identity, SSO & Internal Platforms
Auth architectures teams rely on
- External IdP integration
- Magento as UI shell pattern
- Admin tools for daily operations
Event-Driven & High-Load Systems
Performance under pressure
- Event ingestion & replay
- Batch workers with backoff
- Observability & reliability
Latest Deep Dives
Long-form breakdowns of integration patterns, architecture decisions, and real-world lessons from enterprise projects.
PIM Integration Patterns That Actually Work in Production
PIM integration looks simple in demos — until attribute mapping breaks your catalog sync at 50,000 SKUs. Learn the production patterns for catalog sync, multi-channel publishing, and the ownership boundaries that prevent silent data corruption.
UCP April 2026: Cart, Catalog, and Signals Change Everything
The Universal Commerce Protocol just shipped its biggest release yet: cart management, catalog search, product lookup, and a signals framework for fraud prevention. I broke down 27 new schemas, 5 breaking changes, and the architectural implications for teams building commerce integrations.
Visa VIC vs UCP: Two Competing Visions for Agentic Commerce
Visa published their VIC reference agent — a 5-microservice demo of AI-driven shopping with tokenized payments. I dissected the architecture, compared it to UCP and other open protocols, and found a fundamental design tension: card networks optimize for payment security, open protocols optimize for merchant flexibility.
The Integration Maestro Rules
Named principles for designing reliable system integrations.
Over years of building ERP and eCommerce integrations, I've seen the same failures repeat. These rules capture the patterns behind those failures — and how to avoid them.
Integration Case Studies
Concrete results from integration projects. Real problems, real solutions, measurable outcomes.
No case studies published yet.
"Most integration failures don't come from lack of documentation. They come from edge cases, legacy behavior, and systems under load."
I write to share what actually breaks — and how to fix it.
Read why I writeSubscribe to Integration Maestro
Architecture patterns, integration failures, and real-world solutions — once a week. No spam, no fluff.
- Deep dives on real architectures
- Lessons from failures and outages
- Patterns you can apply at work

About the author
From military academy to integration architect
I'm Artemii Karkusha — Integration Architect specializing in ERP, eCommerce, and high-load system integrations. I write about integration failures, architectural trade-offs, and performance patterns.
Read my story