Related: https://github.com/elastic/enhancements/issues/16724 (internal)

It should be possible to create a rule for a dependency's latency (like Redis, Mysql or Elasticsearch). Currently only instrumented services can be monitored with rules.

Quote from customer:

One of the application development teams would like to track/monitor the latency on an mssql dependency for their service rather than monitoring latency at the service or transaction level. This would provide value by allowing them to track poor performing queries.