Tracing is a crucial aspect of efficient error monitoring, allowing developers to quickly identify the root cause of errors across multiple services, thereby saving time and effort in debugging. Sentry's tracing capabilities enable unique identifiers to be used for this purpose, facilitating pinpointing service and code issues. PagerDuty integration with Sentry provides immediate visibility into errors, enabling developer teams to make informed decisions about next steps. This integration allows alerts to trigger PagerDuty incidents based on specific error rules set up in Sentry, providing proactive incident response and intelligence workflows.