For office setup application it is a computer application and it is a product of Microsoft en-us generally it works on our computer or PC like daily works. i want to say that we are providing technical help or training for MS office setup(downloading/installation and update)
Note: Can follow the following "steps":
. Go to office.com/setup
official web page
. Enter your MS office setup product key correctly.
. Choose your Microsoft versions as well as installed on your PC.
. And can update, download, install now.