Account A must put events onto an EventBridge event bus in Account…

Question

Account A must put events onto an EventBridge event bus in Account B for a multi-account city services mesh. What must be true?

Accepted Answer

Permissions on the producer and the event bus policy in Account B must both allow the cross-account PutEvents path. — Cross-account EventBridge is a two-sided handshake: the producer needs permission, and Account B’s bus policy has to welcome that principal. Matching detail-type text does not erase account walls. Public writable buses are not the pattern.

Answer

Only Account A’s identity policy matters; Account B needs no bus policy changes.

Answer

EventBridge ignores account boundaries when the detail-type string matches.

Answer

Make the event bus publicly writable from the internet without AWS principals.

Account A must put events onto an EventBridge event bus in Account B for a multi-account city services mesh. What must be true?

Short Explanation

Full Explanation