# Zephyr RTOS - Logging Subsystem [TOC] ## References ### [Using the Logging Subsystem to Debug Zephyr Apps](https://youtu.be/xtIeqXy8OpE) {%youtube xtIeqXy8OpE %} ### [Logging subsystem overview](https://youtu.be/zCNzceP2Dzk) {%youtube zCNzceP2Dzk %} ### [Connecting Zephyr Logging to the Cloud over Constrained Channels](https://youtu.be/p9k6bl1Hlqo) {%youtube p9k6bl1Hlqo %}