Which tool can be used to monitor Azure SQL Database performance?

Azure Monitor serves as a comprehensive platform for tracking the performance and health of Azure resources, including Azure SQL Database. This tool offers a range of built-in metrics and alerts that help database administrators understand how well their databases are performing and identify any potential issues. Through Azure Monitor, users can set up alerts based on specific performance metrics, visualize data through dashboards, and gain insights into resource usage and performance trends over time.

While SQL Server Management Studio (SSMS) is a valuable tool for database management and operational tasks, it does not provide the same extensive suite of monitoring capabilities as Azure Monitor. Azure Functions relate more to event-driven computing rather than performance monitoring of databases. Power BI is primarily a visualization tool used for business intelligence and analytics; while it can connect to databases to generate reports, it is not tailored for real-time performance monitoring of Azure SQL Database.

Thus, Azure Monitor stands out as the correct choice for those looking to actively monitor and manage the performance of Azure SQL databases effectively.