Apollo Engine's new Alerts feature provides proactive monitoring for GraphQL APIs, enabling teams to respond quickly to performance issues and errors. With flexible configuration options, users can set thresholds on request rate, request duration, error rate, and error percentage to receive notifications when problems arise. The alerts are evaluated on a rolling five-minute window, allowing for timely resolution of issues. To set up alerts, users can access the new ALERTS tab in their Engine account, where they can configure alert channels and trigger values. Additionally, users can monitor what matters most to their users by setting up per-operation triggers or using service-wide triggers as safety nets. With this feature, teams can ensure their APIs are running smoothly and respond promptly to issues, without being woken up at 3 am for minor issues.