Solo Game Developer, known only as MetallCore999, has recently shared a new demo showcasing a fantastic Unity-powered procedural stylized sky and clouds created for a personal project. Set up in one skybox shader, the final result was achieved with Amplify Creations' Amplify Shader Editor, a node-based shader creation tool that provides a consistent development environment that seamlessly blends with Unity's UI. To create the clouds, the developer utilized Photoshop-made Alpha and Normal textures.
Since the setup was made for a personal commercial project, not much has been revealed about the technical nuances behind it. Instead, the developer provided some amazing educational materials that shed some light on the techniques that you can use to create a similar sky and clouds: