This talk was presented at Learn Swift Milan meetup (https://www.meetup.com/it-IT/Learn-Swift-Milan/) in November 2017. It illustrates the basics of Vapor (https://vapor.codes/), one of the available frameworks for backend development in Swift.
Source code for the live coding session presented during the talk is available on Github: https://github.com/para/LearnSwiftMilan-EmojiPets