Office-2016-24-c2r-iso-16.0. 17328.20162-x64r.p... -

Let's parse the remaining parts of the filename:

The presence of "ISO" in the name refers to an optical disk image. It is a digital copy of everything that would have once been burned onto a physical DVD. In an era of high-speed internet, the ISO remains a critical tool for system administrators who need to deploy software across hundreds of computers without taxing an external internet connection. It is a "frozen" version of a specific build—in this case, version 16.0.17328 Office-2016-24-C2R-ISO-16.0. 17328.20162-x64r.p...

: The defining mechanism. Unlike traditional MSI (Microsoft Installer) setups, Click-to-Run uses virtualization technology to stream and install Office apps rapidly over the network or from local media. Let's parse the remaining parts of the filename: