Fabric + Azure Log Analytics (Azure Monitor)

Hi frithjof_v 
Thanks for using Fabric Community. Apologies for the delay in response.

Azure Log Analytics, part of Azure Monitor, is a powerful tool that collects and analyzes telemetry from various sources. It can provide valuable insights into your applications and services, helping you maximize their availability and performance.

When used with Microsoft Fabric, Azure Log Analytics can track user activities, which can be critical for meeting regulatory compliance and records management requirements. 
Track user activities in Microsoft Fabric - Microsoft Fabric | Microsoft Learn

Regarding Power BI, you can indeed create a Power BI semantic model directly from a Log Analytics query. This semantic model can be used to create reports, analyze in Excel, and more. 
Create a semantic model from Log Analytics - Power BI | Microsoft Learn

But we cannot collect telemetry about Power BI dataflows.

Using Azure Log Analytics in Power BI - Power BI | Microsoft Learn

The Fabric Capacity Metrics App is another useful tool. It provides monitoring capabilities for Microsoft Fabric capacities, helping you monitor your capacity consumption and make informed decisions on how to use your capacity resources. 
You can also generate a log which is recorded in the log analytics linked to the workspace using Notebooks as replied here Solved: Notebook Logs - Microsoft Fabric Community

In conclusion, using Azure Log Analytics in conjunction with the Fabric Capacity Metrics App could provide a more comprehensive view of your Fabric environment.



Hope this helps. Please let me know if you have any further questions.