I work in The Netherlands and there we have been using arrow optics for a while and it is more than amazing. I want with this talk to share my experience but instead of talking Telecom, I want to include this talk in the context of a spaceship and the data transmission to talk with the systems in that spaceship. I cannot of course show code of any company I have been and so, to share my knowledge and experience I will create a space ship scenario. For that I will use the Spring Framework as an example for services completely implemented in Kotlin, with a R2DBC database and completely reactive. My experiences should raise the curiosity and hopefully avoid seeing people make mistakes with arrow and explain what it is, what it is not, and it can be.