: You need a reliable, relatively fast internet connection. If your connection drops mid-install, the process may fail.
If you're using a Debian NetInstall on a laptop, always keep an Ethernet cable handy just in case the installer doesn't recognize your Wi-Fi card out of the box. SLED 15 SP5 | Deployment Guide - SUSE Documentation netinstall
: You only download what you actually use. If you want a lightweight server without a desktop environment, a NetInstall won't force you to download gigabytes of unused GUI data. : You need a reliable, relatively fast internet connection