In the article, different types of alerts for monitoring infrastructure metrics and events are explored, emphasizing the importance of understanding each alert's ideal use case. Threshold alerts are used to trigger notifications when metrics exceed a set value over a specified time, while change alerts track significant variations in metrics with variable baselines. Outlier alerts identify deviations from expected group behavior, useful for distributed systems, and anomaly alerts detect deviations from historical trends, accommodating patterns like seasonality. Event alerts focus on discrete occurrences, such as failed jobs, and composite alerts combine multiple conditions to address complex issues. By leveraging these alert types, users can promptly address critical issues in their environment.