Industrial Zone Logistics is a project in Civilization VI. It becomes available after building an Industrial Zone district (or one of its replacements).
This project organizes infrastructural work in the city with the expertise of the engineers from the Industrial Zone. This increases the city Gold yield, and at the project's completion yields Great Engineer points equal to 15% of the Production invested in it.
In Gathering Storm, the Logistics effort provides the city with Power instead of Gold - something arguably much more useful, since there are many other possible sources of gold.