cloudwatch:PutMetricAlarm is a Write access-level action in the cloudwatch service. Grants permission to create or update an alarm and associates it with the specified Amazon CloudWatch metric
ARNs that cloudwatch:PutMetricAlarm can be scoped to in an IAM policy.
Keys you can use in the Condition block of a policy that grants cloudwatch:PutMetricAlarm.
Filters access by tags associated with the resource
A minimal policy that allows cloudwatch:PutMetricAlarm. Replace "Resource": "*" with a specific ARN to follow least privilege.
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "AllowCloudwatchPutMetricAlarm",
"Effect": "Allow",
"Action": "cloudwatch:PutMetricAlarm",
"Resource": "*"
}
]
}