Microsoft Sentinel scheduled analytics rules use Kusto Query Language (KQL) to examine data stored in the underlying Log Analytics workspace. Microsoft describes scheduled analytics rules as rules based on Kusto queries that execute periodically against a defined lookback period. The query represents the detection logic: it filters, correlates, aggregates, and analyzes security events, and when the configured threshold is satisfied, Sentinel generates an alert and potentially an incident. Microsoft Learn

For automated response, the appropriate component is a Microsoft Sentinel playbook. Playbooks are built on Azure Logic Apps and provide Security Orchestration, Automation, and Response (SOAR). They can perform actions such as disabling compromised accounts, blocking IP addresses, sending notifications, interacting with ticketing systems, or enriching an incident with external intelligence. Microsoft Learn

In the current Sentinel architecture, Microsoft recommends triggering playbooks through automation rules rather than the older direct analytics-rule integration. Nevertheless, among the choices shown, the response component remains the Sentinel playbook.