> Yeah, S3 compliant buckets work, but that's the simplest example possible.

Agree; you can’t just say “give me a queue”. You need to tune in-flight messages, processing times, FIFO or not, dead letters — the list goes on. These details are not 1:1 for different clouds, and they can’t be ignored for anything beyond a PoC. If I need to mess with all that in Wing…I could just use the AWS SDK. I can also trust that the SDK has the complete, latest feature set.