**1. To add tags to a cluster** - Command:: aws emr add-tags --resource-id j-xxxxxxx --tags name="John Doe" age=29 sex=male address="123 East NW Seattle" - Output:: None **2. To list tags of a cluster** --Command:: aws emr describe-cluster --cluster-id j-XXXXXXYY --query Cluster.Tags - Output:: [ { "Value": "male", "Key": "sex" }, { "Value": "123 East NW Seattle", "Key": "address" }, { "Value": "John Doe", "Key": "name" }, { "Value": "29", "Key": "age" } ]