https://github.com/open-telemetry/semantic-conventions/blob/main/docs/attributes-registry/cloud.md document does not explain what the cloud platform is (cloud.platform attribute):

• is it a name of a service/product/offering?
• do all services qualify (or only those that can run user code?)

Assuming cloud services are instrumented themselves and report spans/metrics to end users, what should they populate?
I.e. could AWS S3 or SQS be added to cloud.platform enum and send their telemetry with cloud.platform: aws_s3 attribute?