Explanation
Scenario: Real-time processing must be monitored to ensure that workloads are sized properly based on actual usage patterns.
To monitor the performance of a database in Azure SQL Database and Azure SQL Managed Instance, start by monitoring the CPU and IO resources used by your workload relative to the level of database performance you chose in selecting a particular service tier and performance level.
Reference:
https://docs.microsoft.com/en-us/azure/azure-sql/database/monitor-tune-overview