Salesforce Flow is the ideal tool for this requirement. Data Cloud publishes platform events for key system processes, including the DataStreamStatusChangedEvent, which fires when a data stream's status changes (e.g., to 'Failed'). A consultant can create a platform event-triggered Flow that subscribes to this event. The Flow can then execute a series of automated actions: send custom notifications via Slack and email, create a Case record for the support team, and update records used by a monitoring dashboard. This provides a robust, immediate, and automated response.

A. Data actions are triggered by customer data or insights (e.g., a website click), not by system monitoring events like a data stream failure.

B. The Data Cloud Query Editor is a tool for manually running queries against DMOs. It is not an automation or monitoring tool.

D. Reports and dashboards are for visualizing data. While they can be scheduled, they cannot trigger immediate, multi-step automations like creating cases and sending Slack alerts.

1. Salesforce Help. (2024). Monitor Data Cloud with Flow. "You can use platform events with flows to send notifications or create processes when a data stream or activation fails."

2. Salesforce Developer Documentation. (2024). Platform Events in Data Cloud. Object Reference for DataStreamStatusChangedEvent. "Represents a change in the status of a data stream... You can create a platform event-triggered flow that subscribes to this event."