> do event-driven architectures work at all, and has anyone "fully embraced" it. It doesn't have to be "fully embraced" to be successful.

For context, I've seen successful event-driven architecture implementations when it comes to data ingestion for analytics/ML purposes.

What I have yet to see is a successful implementation of microservices using local state stores built by joining streams owned by multiple domains. That's where the (arbitrary) "fully embraced" term came from.

Does everyone implement the outbox pattern themselves? Or treat their streams as the only source of truth, materialising the state that is already embedded in them?