I have the following architecture in my project:

*UI -> Application -> Domain -> Infrastructure* (4 tier)

I need to allow user to upload a image, where the better place to keep the files generated by the user? In a folder in UI project?

**Update:**

Here's my folder structure:

![enter image description here](https://i.stack.imgur.com/mFDch.jpg)

Thanks for answer, but I want to know too where to save the physic file.

**Update 2:**

My app is a CMS and these images are content generated by user.