I already published a retrospective that covers most of the story so far in 2018, eight years into my time on the Spring team. I won't get into all of that again, except to update you on what's happened since 2018.
Josh (@starbuxman) has (officially) been a Spring Developer Advocate since 2010. Josh is a Java Champion, a Kotlin Google Developer Expert, author of 6 books (including O’Reilly's Cloud Native Java: Designing Resilient Systems with Spring Boot, Spring Cloud, and Cloud Foundry and the upcoming Reactive Spring) and numerous best-selling video trainings (including Building Microservices with Spring Boot Livelessons with Spring Boot co-founder Phil Webb), and an open-source contributor (Spring Boot, Spring Integration, Spring Cloud, Activiti and Vaadin), a podcaster (A Bootiful Podcast) and a screencaster.