In my opinion, that's one of the goals for AWS Media Services. You could think of them as Lego bricks, combine a couple of them together and you could easily h

In my opinion, that's one of the goals for AWS Media Services. You could think of them as Lego bricks, combine a couple of them together and you could easily have a "broadcast grade" workflow for your content. But back to your original question, currently MediaLive does not say it supports RTMP outputs (make sure to request it as a feature!) so using it as a "one-to-many" would require another lego brick to convert UDP to RTMP. However, once support has been added for RTMP outputs, you could live stream to any platform (Twitch, Youtube, Facebook, Instagram) that supports the RTMP protocol. The neat thing about MediaLive is that it allows you to use audio, video, or caption tracks. So for example, if you had a single source that had platform-specific tracks, you could create outputs for each platform and use the corresponding track to create curated content. But, that's just one example of hundreds that is possible with AWS Media Services.