This document provides a general introduction of the Zephyr kernel's key capabilities and services. Additional details can be found by consulting the :ref:`api` and :ref:`application` documentation, and by examining the code in the Zephyr source tree.
.. toctree:: :maxdepth: 2 overview/overview.rst threads/threads.rst timing/timing.rst memory/memory.rst synchronization/synchronization.rst data_passing/data_passing.rst usermode/usermode.rst other/other.rst