A public URL is a web address that leads directly to a document and can be accessed from any network.
It always ends in the corresponding document extension;
- mp4
- png
For example,
The best practice is to have your web administration team host the file on their hosting service and provide you with the public URL to access the document.
Another alternative is to use a free or paid hosting service depending on your needs.
If you use Amazon Web Services (AWS) here is a step-by-step on how to create the URL of a document as public.