Alert manager sns notification

I am using alertmanager 0.25 with prometheus(2.36)/Grafana (8.4) (none is not cloud hosted ), eveything is installed on aws ec2 instance.

I have setup few alerts for node exporter, and i want to send those alerts notification on sns topics.

  1. is there a complete guide on how to do it? I saw few examples for hosted sites but hardly anything for non hosted.
  2. is it possible to setup multiple sns topics each for set of alerts (or group of alerts)?
    Appreciate any help.