How to send notifications to specific users in Microsoft Teams (across multiple teams) from an external api

Question

I want to notify (can be activity feed or 1:1 chat) specific users in Microsoft Teams via an external api. The teams can be of different organizations. I looked into the docs as well, but couldn't figure out the solution. Is this even possible?

Answer 1

Yes, this is definitely possible - it requires you to build a bot to enable pro-active messaging. There are actually a few different approaches and API options for doing this, but I've got a very comprehensive example of one of the approaches, that includes a.Net and a Node.js sample, at https://github.com/HiltonGiesenow/teams-dev-samples/tree/add-proactive-messaging-sample/samples/bot-proactive-messaging . There are links at the bottom of the page to various additional readings as well for more info.