I like how easy it is to use cloudinary in my project by just adding one line code (I am using angularjs) which makes me more productive as compared to traditional way where i have to write javascript codes every time when uploading files or images into server side folder.
It's free so there are no limitations and you can easily store large amount of data without worrying about performance issues. You need to understand basics before going deep inside this product otherwise its very difficult to get benefits from such tool. We were solving problems related file sharing between our app users.