Azure Functions integration with Azure Monitor Logs is now in public preview
Updated: November 05, 2019
Using the integration with Azure Monitor Logs, you can now send Azure Functions host logs (system-generated) and application logs (user-generated) to a Log Analytics workspace, a Storage account, or an Event Hub. This will allow you to query logs using Azure Monitor Logs, with the ability to consolidate logs from different resources in the same workspace. Once the data is sent to the workspace, it can be analyzed with queries to quickly retrieve, consolidate, and analyze collected data - including using 3rd party services for analysis - or set alert rules.