Framework: Adoption -> Engagement -> Business Retention -> Operational Reliability.
1. Adoption Metrics:
- Feature Discovery: % of active users who open a collaborative document.
- Multiplayer Activation: % of documents edited by two or more unique users within a 7-day window.
2. Engagement & Collaboration Depth:
- Concurrent Session Duration: Average time spent co-editing simultaneously.
- Collaboration Actions: Count of inline comments, mentions (@username), and resolved suggestion threads per document.
3. Business Impact & Retention:
- 30-day and 90-day retention comparison between solo users vs teams using real-time collaboration.
- Viral Coefficient / Expansion: Number of new teammate invitations originating directly from collaborative document sharing links.
4. Guardrail & Quality Metrics:
- Conflict resolution errors, WebSocket connection drop rate, and p95 sync latency across collaborative peers.