Unnecessary background services (Cortana, telemetry, Xbox services) are removed or disabled.
Installing a lite version requires creating a bootable USB drive using specialized tools, as shown in this tutorial on using Rufus for Windows installation . windows 10 lite 1607 free
Designed to use significantly fewer system resources, such as RAM and CPU cycles, which can lead to higher FPS in gaming or smoother operation on low-spec PCs. Reduced Footprint: Unnecessary background services (Cortana
These "Lite" ISOs are created by anonymous hackers using tools like NTlite or MSMG Toolkit . They rip out "unnecessary" components to make Windows fit on a 4GB SSD. such as RAM and CPU cycles