Architecture

Overview

This page provides an overview of the architectural approaches, patterns, and practices used throughout my reference projects.

My focus is on designing systems that are scalable, maintainable, observable, and aligned with modern cloud-native engineering practices.

While technologies evolve, the underlying architectural principles remain consistent:

• Simplicity over unnecessary complexity
• Clear separation of concerns
• Automation wherever practical
• Security by design
• Observability from the beginning
• Design for change and long-term maintainability

---

Architectural Principles

Cloud-Native First

Applications should take advantage of managed platform services wherever practical.

Benefits include:

• Reduced operational overhead
• Improved reliability
• Faster delivery
• Better scalability
• Lower maintenance costs

Azure Services Commonly Used

• Azure App Service
• Azure Container Apps
• Azure SQL
• Cosmos DB
• Service Bus
• Event Hubs
• Blob Storage
• Key Vault
• Application Insights

---

Domain-Driven Design

Business concepts should drive system design.

Rather than structuring applications around databases or technical concerns, systems should be organised around business capabilities and domain boundaries.

Key Concepts

• Bounded Contexts
• Aggregates
• Domain Events
• Ubiquitous Language
• Value Objects
• Commands and Queries

---

Event-Driven Architecture

Modern distributed systems often communicate through events and asynchronous messaging.

This approach enables:

• Loose coupling
• Scalability
• Resilience
• Independent deployment
• Improved system evolution

Common Messaging Technologies

• Azure Service Bus
• Azure Event Hubs

Typical Flow

```text User Action ↓ Command ↓ Domain Processing ↓ Domain Event ↓ Message Broker ↓ Subscribers