Since it is web-based, does it need to be connected to the internet to use it?
Products that run on a web browser are sometimes called web-based.
We call it that because our DICOM viewer runs on a web browser.
It does not need to be connected to the Internet.
PACS is installed on a PC/server in the local network, so any device in the same network as it can access it via a web browser.
It needs to be connected to the Internet.
This is to access the PACS on the cloud server via the Internet.