What are two engagement metrics that Twitch is invested in quantifying?

Twitch, as a platform focused on live interactive content, is deeply invested in quantifying user engagement beyond simple views or clicks. "Emotion" is a key metric because it reflects the viewer's emotional response to the content, indicating a deeper level of connection and immersion. This can be measured through chat sentiment analysis, emote usage, and viewer participation in polls or raids. "Attention" is equally crucial, as it directly measures how long and how intently viewers are focused on a stream. This goes beyond just watch time to include factors like active chat participation, multi-tasking behavior, and retention rates. While "Customer Satisfaction" is important for any business, it's a broader business metric rather than a specific, real-time engagement metric that Twitch actively quantifies during a stream.