Spring I/O 2023 - Barcelona, 18-19 May Slides: https://github.com/shinyay/spring-io-2023-kotlin-for-fun/blob/main/pdf/230519_SpringIO_Kotlin_for_Fun_for_Spring_Fans_PDF.pdf GitHub repo: https://github.com/shinyay/spring-io-2023-kotlin-for-fun It has already been 7 years since the first version of Kotlin was released. When it was first released, I didn’t use Kotlin much because I thought it was only for mobile development, and it wasn’t until about a year later that I realized that Kotlin could also be used for server-side development, which is where I started using it. Now, it’s 2023, and no one thinks Kotlin is only for Android development, right? You still think it is a language for mobile development? I myself have been enjoying the productivity of Kotlin itself since I started using it for server-side development. It is truly the developer experience that a programming language provides. And Kotlin is supported by your favorite Spring, which you have seen on start.spring.io. In this session, I would like to share with you the joy of Spring development with Kotlin.