so now that we covered uh some of the definition and some of the thought process uh we can dive into the example because there is a lot of good things to go over uh so first example first use case we have here is a user illustration i think that everyone has once in their life of development uh met with some kind of huge registration so let's look at our uh requirements so we have a requirement that says that we have a mobile app mobile and web apps so we have two clients uh that have two-step registration in step