Vincent Vauban is a senior Java full-stack consultant at Zenika Lille, VMware vExpert, and Spring Professional certified. For 15+ years, he has built and operated production systems with Spring Boot, Kafka, and Kubernetes, with a focus on observability (Datadog), event interoperability (CloudEvents), and secure, cost-efficient delivery. Vincent teaches thousands of developers on Udemy and writes the Java Fullstack Newsletter, sharing practical guidance on Spring and modern Java. An active member of the French Java community, he regularly gives talks and workshops. This theory-first guide maps the certification objectives to real-world understanding—clear, concise, and production-minded. (Independent work; not affiliated with VMware or the Spring Team.)