A cloud administrator is supporting an application that has several reliability issues. The administrator needs visibility into the performance characteristics of the application. Which of the followi

Files containing error messages are unstructured log artifacts that require parsing before they can be visualized, making them unsuitable as a primary dashboard data source.

Performance and workload testing results are point-in-time historical snapshots and do not provide the continuous, real-time visibility a dashboard requires.

Raw syslog data is verbose, unstructured text intended for troubleshooting, not for aggregating into dashboard KPI visualizations.

Metrics and time-series data are the foundation of performance dashboards in cloud monitoring platforms such as Azure Monitor or AWS CloudWatch. They provide structured, queryable data points over time that map directly to key performance indicators like latency, throughput, and error rates. This enables real-time visualization and alerting, which is the primary purpose of a reporting dashboard.