ARCHITECTURE

Designing cloud architecture at the enterprise level means thinking well beyond individual platform capabilities. A well-architected multi-cloud strategy gives organizations workload portability, vendor resilience, and cost optimization — while maintaining a unified security and governance posture across all environments.

The framework below represents the architecture pattern I apply across engagements: platform-specific services running on their optimal cloud, connected through a unified control plane covering identity, policy, observability, and network fabric — with a consistent security perimeter across all clouds.

One of the core challenges in microservices architecture is managing distributed transactions without a shared database. The SAGA pattern solves this by decomposing a transaction into a sequence of local transactions, each publishing an event that triggers the next step — and defining compensating transactions to roll back cleanly when any step fails.

The architecture below illustrates a choreography-based SAGA using Apache Kafka as the event broker. An HTTP client initiates an order, Kafka distributes domain events across the Order Service, Restaurant Service, and Payment Service — each maintaining its own local database (the fundamental SAGA principle). Compensating events like Order Cancelled ensure the system remains consistent even under partial failure, without requiring a distributed transaction coordinator.