Datadog Cloud SIEM provides an extensive set of out-of-the-box detection rules to help detect security threats in large-scale environments. These rules can be combined with log-based detection rules that are tailored to a specific business case, allowing users to automatically identify malicious activity and mitigate threats before they become more serious. To create powerful detection rules, it's essential to build efficient queries that extract the most critical security-related events from application logs, use templates and template variables to create informative signals, and create suppression lists to reduce false positives. Datadog's flexible search syntax enables users to customize queries to fit their needs, and security signals provide important details about activity flagged by a detection rule, including customizable messages that can be used to share security policies and remediation steps. By fine-tuning security signals and suppressing noise, users can accelerate investigation efforts and identify real threats to their applications.