IaaS = Classic Infrastructure (SoftLayer) Resources. Cloud = IBM Cloud Resources.
$ ibmcloud resource search 'name:devcluster'
$ ibmcloud resource search 'name:devcluster' --output json | jq -r '.items[].crn'
$ ibmcloud resource search 'tags:ryantiffany' --output json
$ ibmcloud resource search 'tags:ryantiffany' --output json | jq -r '.items[].name'
$ ibmcloud resource search 'tags:ryantiffany' --output json | jq -r '.items[].crn'
$ ibmcloud resource search 'tags:ryantiffany' --output json | jq -r '.items[].type'
$ ibmcloud resource search -p classic-infrastructure --output json
$ ibmcloud resource search "tagReferences.tag.name:ryantiffany" -p classic-infrastructure --output json
$ ibmcloud resource search "tagReferences.tag.name:ryantiffany" -p classic-infrastructure --output json | jq -r '.items[].resourceType'
$ ibmcloud resource search "tagReferences.tag.name:ryantiffany _objectType:SoftLayer_Virtual_Guest" -p classic-infrastructure --output json
$ ibmcloud resource search "tagReferences.tag.name:ryantiffany _objectType:SoftLayer_Virtual_Guest" -p classic-infrastructure --output json | jq -r '.items[].resource.fullyQualifiedDomainName'
$ ibmcloud resource search "tagReferences.tag.name:<tag> _objectType:SoftLayer_Virtual_Guest" -p classic-infrastructure --output json | jq -r '.items[].resource.id'