Many "Lite" versions pre-disable tracking and telemetry services that were standard in the original release. Key Considerations Before Downloading
Background processes that send usage data to Microsoft. Windows 8.1 Lite Archive.org
If you want a lightweight Windows 8.1 without third-party mods, use the official ISO (also available on Archive.org). It is Microsoft official and allows you to disable components via the Image Configuration Editor (ICE) without hacking the ISO. Windows 8.1 Lite Archive.org