As you explore the vast reaches of space in Starfield, you will be able to claim certain areas as an outpost for yourself, where you can help create a network of commerce around the galaxy. Using these systems to import and export goods is a way to make some good money, but it also can help you not have to leave any goods behind at the risk of being over-encumbered.
Starfield: How To Establish Cargo Links
Cargo Links will help you transport your goods from one Outpost to another in Starfield. This guide explains how the system works.