What is Workbook?

• Workbooks are interactive documents that provide deep insights into your data, investigation, and collaboration inside the team
• Workbooks provide a flexible canvas for data analysis and the creation of rich visual reports within the Azure portal
• They allow you to tap into multiple data sources from across Azure, and combine them into unified interactive experiences

https://docs.microsoft.com/en-us/azure/azure-monitor/visualizations#workbooks

https://docs.microsoft.com/en-us/azure/azure-monitor/visualize/workbooks-overview