.NET 10 Preview 3 made it easier to use Server sent events and since reading about it I have been wanting to try it out with an Optimizely CMS admin tool.
Here is a diff of what has been added onto the Alloy template: https://github.com/Stekeblad/Server-Sent-Events/commit/db7e07a7960e59320c3ecaed64125f8cdbf7a9c5