BOOKS

Learning deeply enough to explain it clearly.

My books focus on practical architecture and implementation—especially the parts that become important when software leaves the tutorial and enters production.

IAM
IDENTITY & SECURITY

Building Identity Systems That Don’t Break

Production-minded identity engineering across Spring Security, Keycloak, SAML/OIDC federation and enterprise integration.

SSO
IDENTITY & SECURITY

Beyond the Login Screen

A practical exploration of what actually happens inside enterprise SSO—beyond the user interface.

RAG
AI & DATA

Building a Data Driven Chatbot (RAG)

Using Python, LangChain, OpenAI and relational data to build useful enterprise retrieval-augmented applications.

SB
SPRING & AI

Mastering Spring Boot 3 & Spring AI

Modern enterprise Java development connected with the rapidly evolving world of AI-enabled applications.

EA
ARCHITECTURE

Enterprise IT Architecture

Architecture as an end-to-end discipline connecting business, applications, integration, security, data and infrastructure.

μS
MICROSERVICES

Microservices & Observability

Engineering distributed systems with the operational visibility required to run them reliably in production.