Log Alerts have been available in Log Analytics for quite some time. Initially they were available via legacy Log Alert API that was specific for Log Analytics. In order to make Log Alert more native to Azure a new Log Alert API was available. With a few minor features like (custom webhook payload) that API was direct translate from the legacy one offering the same features. Now Azure Monitor team is introducing a new Log Alert that is named Log Alert V2. That new alert is using the same API but with new version. So if you use the API version 2018-04-16 to create Log Alert you are creating v1 and if you use version 2021-08-01 you are creating v2. Log Alert v2 will be generally available probably very soon as I have received e-mail notification containing the following information:
- any API version like 2021-02-01-preview will be deprecated and replaced by version 2021-08-01
- billing for Log Alert v2 will start from 30th of November.
This for me signals that before 30th of November or several weeks after the service will be generally available. I am not aware of specific information just the official e-mail notification leads me to these conclusions. The Log Alert v2 has been in preview for a couple of months which I have been testing and providing feedback.