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Here’s a nice comparison between CloudEvents and AsyncAPI from 2019. You can combine them. In the end being able to version and wrap events is useful, although amusingly it reminds me of SOAP.

https://www.asyncapi.com/blog/asyncapi-cloud-events

Thanks!

I enjoy anything that drives down NIH, or something that an existing library could possibly support, or something that I could take to my next job (or could possibly hire for)

I believe cloud events are most common in Kafka-adjacent or event-driven architectures but I think they're used in some GCP serverless things, too

They're also documented for aws https://docs.aws.amazon.com/eventbridge/latest/userguide/eb-... and argo-events https://github.com/argoproj/argo-events/blob/master/docs/con...

I guess you mean "not invented here..."

Yep, any opportunity to not reinvent stuff is a big win.

But I'm wary of layers upon layers. I'm thinking of how this could be combined with MQTT... it doesn't seem totally redundant.

Good