System logs are records generated by a computer or network device that document events, processes, and activities. These logs help administrators monitor system performance, troubleshoot issues, and maintain security. They can include information about user actions, system errors, and application performance. Logs are typically stored in a structured format, making it easier to analyze the data. Common types of system logs include event logs, application logs, and security logs. By reviewing these logs, IT professionals can identify patterns, detect anomalies, and ensure that systems are running smoothly and securely.