Running "put-permission" permits the specified AWS account to putevents to your account's default *event bus* .Show details from next link. https://docs.aws.amazon.com/ja_jp/cli/latest/reference/events/put-permission.html
aws events put-permission --action events:PutEvents --statement-id MySid --principal \ |
| CloudWatch Events Permissions Reference - Amazon CloudWatch Events : http://docs.aws.amazon.com/AmazonCloudWatch/latest/events/CloudWatchEvents-CrossAccountEventDelivery.html |