It consists of two main components:
-the uVisor binaries, which set up a protected environment where isolated compartments are granted finely tuned permissions.
-APIs to interact with the uVisor.
If you are building your application with yotta on a supported platform, then you will already be running on top of the uVisor. At this stage of development, though, it is disabled by default.
To learn more about the uVisor refer to its documentation.