Learn Spring Boot 4 in just 30 minutes with this fast, practical crash course. In this tutorial, you’ll explore the newest features in Spring Boot 4, build a real REST API, learn API versioning, register beans using the new API, call external APIs with @HttpExchange, and use built-in resilience features all from scratch. Spring Boot 4 brings major improvements like: - Java 25 support + Java 17 compatibility - Modularized codebase with smaller, focused JARs - JSpecify null-safety across the portfolio - First-class API versioning - New HTTP Service Clients (@HttpExchange, @GetExchange) - Modern bean registration API - Virtual thread support - Built-in resilience and retry mechanisms 👀 Watch Video here - https://youtu.be/59twysAveKI Are you excited about the new features?