### Relevant Articles:

- [Spring Boot 3 and Spring Framework 6.0 – What’s New](https://www.baeldung.com/spring-boot-3-spring-6-new)
- [Singleton Design Pattern vs Singleton Beans in Spring Boot](https://www.baeldung.com/spring-boot-singleton-vs-beans)
- [Migrate Application From Spring Boot 2 to Spring Boot 3](https://www.baeldung.com/spring-boot-3-migration)