Overview

Some RIO rules listen on the account’s built-in default bus rather than on the RIO Events Bus. This is because AWS services always publish their own events to default — they cannot be redirected to a custom bus.

These are AWS-managed events, so the RIO naming rules in .claude/rules/eventbridge.md do not apply to them; they keep AWS’s own structure.

Rules on this bus

source	detail-type	Consumer	Declared in
aws.s3	Object Created	CRM data-sync state machine, for product-master file uploads	rio-ingestion-service/infrastructure/modules/ecs/crm-data-sync.yaml:368-390
aws.rds	RDS DB Instance Event	Lambda that re-registers the RDS IP in a target group	rio-infra/infrastructure/template.yaml:401-419
aws.bedrock	Batch Inference Job State Change	Batch assembler, for LLM distillation jobs	rio-deal-desk/infrastructure/distillation/template.yaml:766-782
aws.ecs	(all ECS detail-types)	CloudWatch Logs, 7-day retention	rio-infra/infrastructure/template.yaml:361-372