Building Microservices

Building Microservices – Designing Fine‑Grained Systems by Sam Newman is one of the foundational books in modern microservices architecture. It’s widely regarded as a practical, experience‑driven guide for architects and engineers who want to design, evolve, and operate microservices in real-world environments.

What the book is about

1. Core microservices principles

Independent deployability
Business-domain boundaries
Autonomous data ownership
Organizational alignment (Conway’s Law)

2. Modeling microservices

Cohesion vs coupling
Domain-driven design (bounded contexts, aggregates)
Event storming

3. Splitting monoliths safely

Incremental decomposition
Strangler Fig pattern
Parallel run and feature toggles

4. Communication styles

Synchronous (REST, gRPC)
Asynchronous (events, messaging)
Request-response vs event-driven trade-offs

5. Deployment & operations

CI/CD pipelines
Containers & Kubernetes
Serverless considerations

6. Testing & observability

Contract testing
Distributed tracing
Log aggregation
Monitoring strategies

7. Security

User-to-service and service-to-service models
Identity propagation
API gateway security

8. Organizational aspects

Team boundaries
Ownership
Microservices as socio-technical systems

Core takeaway

It’s a holistic, practice-oriented manual covering modeling, integration, deployment, testing, observability, organizational alignment, and security in microservices — with both conceptual clarity and actionable patterns.

Why it matters

It reinforces domain-driven decomposition, which is crucial when designing AI-driven or workflow-driven systems.
It provides integration patterns that map directly to your work with agents, orchestrators, and distributed workflows.
It covers observability and security, which are essential for production-grade AI/microservice platforms.
It helps you design scalable backend architectures for your Daily Scrum app or future enterprise systems.