What categories of slave labor could not be found on platforms?

Certain categories of slave labor, such as domestic servitude, agricultural labor in remote areas, and artisanal work in small workshops, often go unreported on platforms due to their hidden and informal nature. Additionally, trafficking for sexual exploitation frequently occurs in private settings, making it less visible on public platforms. These forms of labor lack the structured visibility that more organized sectors might have, complicating efforts for identification and intervention.