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Yes! If you already know the instance IDs, you can just use a for loop to do this.

If you need to look up the instances (or other resources), there are `getX` functions that can help with this - e.g. <https://www.pulumi.com/docs/reference/pkg/aws/ec2/getinstances/>.

<@UDEJ1F5SQ> - thanks! where is documentation on how to implement the loop in? Can you send that

I already know the instances- I have a list of them

i just want to reference the each instance ID one at time

<@UDEJ1F5SQ> - can you provide an example?

You would do something like this, assuming you're using Python:

```test_instances = ["i-xyz", "i-abc"]

for instance_id in test_instances:
    instance_alarm = aws.cloudwatch.MetricAlarm(f"alarm-{instance_id}",
        alarm_description=f"Monitor for instance {instance_id}",
        # other inputs
    )```

That's just normal python by the way, the for loop is not something specific to Pulumi, in case that's not clear.