Spring I/O 2022: Compendium of Voices, Reflections, Learnings, and Trends in Spring

Whether you're a veteran engineer or an emerging developer, we hope this book will serve as a guide, a source of clarity, and a catalyst for further exploration in the Spring universe.

Because conferences end, but ideas endure. Because slide decks fade, but thoughtful documentation remains. Because Spring I/O is not just a gathering - it's a signal of what's next in Java and modern software engineering.

• Concise, structured summaries of the most impactful sessions at Spring I/O 2022
• Curated themes covering Spring Boot, security, observability, microservices, Kotlin, testing, and cloud-native patterns
• Editorial introductions that contextualize the technical content and draw links across the conference program
• Links to original recordings and source code when available, to extend your learning journey

• Spring developers, from junior to senior, who want a distilled recap of key takeaways
• Architects and tech leads seeking strategic insights and modern implementation patterns
• Educators and students aiming to explore contemporary Java practices in a structured format
• Anyone who couldn't attend Spring I/O but wants to stay in sync with where Spring is heading

Because Spring is moving fast. Because cloud-native is becoming the default. Because observability is no longer optional. Because resilience, modularity, and dev experience are shaping the next wave of enterprise applications. And because a book like this helps you stay grounded while keeping your sights on the horizon.