There are many architectures you can choose from when building an application. Every developer should at least be aware of the Hexagonal Architecture, which allows your application to be technology agnostic. In this talk, I will explain how Hexagonal Architecture works, followed by some diagrams and code examples. I will express my opinion about some parts of that architecture, go over some cases where I was really glad I used it and hopefully, after this talk you will be able to start using it in your future projects.