Which metric can provide the best insights into channel performance?

Watch time is the most crucial metric for understanding channel performance because it directly reflects audience engagement and content quality. YouTube's algorithm prioritizes videos and channels that accumulate more watch time, as it indicates viewers find the content valuable and are staying on the platform longer. Higher watch time often leads to better discoverability and increased organic reach. Demographics provide insights into your audience's characteristics but don't directly measure engagement. Comments indicate interaction but can be subjective and don't always correlate with sustained viewing. Devices show how viewers access your content, which is useful for optimization but not a primary indicator of performance.