Containment Rate measures the percentage of support interactions that stay within a self-service or AI channel without escalating to human agents. It answers: "How many customers did we keep out of the human queue?"

Containment is a queue management metric, not a quality metric. A ticket is "contained" if it never reaches a human, regardless of whether the customer's issue was actually resolved. The customer might have found their answer, given up in frustration, or abandoned after three failed bot loops. All three count as contained.

This distinction matters. High containment with low customer satisfaction means you're trapping customers, not helping them. Containment rate should always be paired with quality metrics: CSAT for contained interactions, repeat contact rate, or downstream churn analysis.

That said, containment rate is valuable for capacity planning. If you're trying to reduce human agent load, containment rate directly measures that outcome. Just don't mistake it for customer success.

Related terms: Deflection Rate, Automation Rate, Resolution Rate, Independently Resolved (IR)