Using PowerShell to Post Channel Messages with Teams Workflows

The incoming webhook connector is a popular method to post information to Teams channels, but Microsoft seems set on retiring the Office connectors. The Teams post to channel workflow when a webhook request is received seems like is a possible replacement, but it’s not just a matter of switching mechanisms. Some PowerShell magic is needed to create a suitable adaptive card to post to the channel, which is exactly what we explain how to do here.

https://office365itpros.com/2024/06/17/teams-post-to-channel-workflow/