Business System Mockup. You ll also see them called wireframes. Except it s not about printing plastic.
The shadow is also quite naturally created. Free templates hand picked just for you. Craft branding mockup envato elements present a complete brand identity on a craft paper mockup.
Other people call it user interface mock ups.
Here is another great and free mockup collections that you can use to showcase your project in office environment. All free to download and fully customizable to your needs. The shadow is also quite naturally created. And prototyping is a relevant technique when creating it systems too.
