DisplayPort Multi-Stream Transport sends multiple uncompressed video streams through a supported link. Plugable explains that an MST hub can break that link into individual monitor connections, while compatible monitors can also form a daisy chain. The feature can travel through suitable USB-C Alt Mode and Thunderbolt connections.

MST relies on native graphics and operating system support instead of generating DisplayLink-style USB graphics. Check those capabilities when comparing docking technologies. A dock that exposes several outputs through MST may behave differently across operating systems, so physical connectivity alone does not guarantee independent extended desktops on every host.