**To modify an IPAM** The following ``modify-ipam`` example modifies an IPAM by adding an Operating Region. (Linux):: aws ec2 modify-ipam \ --ipam-id ipam-08440e7a3acde3908 \ --add-operating-regions RegionName=us-west-2 (Windows):: aws ec2 modify-ipam ^ --ipam-id ipam-08440e7a3acde3908 ^ --add-operating-regions RegionName=us-west-2 Output:: { "Ipam": { "OwnerId": "123456789012", "IpamId": "ipam-08440e7a3acde3908", "IpamArn": "arn:aws:ec2::123456789012:ipam/ipam-08440e7a3acde3908", "IpamRegion": "us-east-1", "PublicDefaultScopeId": "ipam-scope-0b9eed026396dbc16", "PrivateDefaultScopeId": "ipam-scope-02fc38cd4c48e7d38", "ScopeCount": 3, "OperatingRegions": [ { "RegionName": "us-east-1" }, { "RegionName": "us-east-2" }, { "RegionName": "us-west-1" }, { "RegionName": "us-west-2" } ], "State": "modify-in-progress" } }