The voice agent launch runbook: ramp, rollback, and on-call

Voice-agent launches require post-release operating practices because conversational failures can remain hidden behind normal uptime metrics while callers experience misunderstandings, delays, repeated prompts, and longer calls. The recommended approach is a staged rollout based on representative conversation volumes rather than short time windows, beginning with shadow testing, progressing through small canaries and controlled ramps, pinning each call to one version, and retaining a live control group and previous version for comparison and rollback. Teams should create concise rollback runbooks in advance with measurable thresholds for containment, escalation rates, repeat utterances, P90 turn latency, conversation duration, and cost per resolved call, alongside clear authority, evidence-capture steps, and human fallback procedures. Severity definitions should distinguish complete outages from broad degradation, cohort-specific problems, and cost-only regressions, with quality metrics segmented by factors such as language, accent, intent, and channel. The guidance also emphasizes defining responsibility boundaries between organizations and vendors, evaluating vendor support, versioning, status communication, and rate limits before incidents occur, and preparing for volume spikes through connection backoff, capacity planning, cost alerts, and advance limit increases where possible.

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