**To change the certificate name for a custom domain name** Command:: aws apigateway update-domain-name --domain-name api.domain.tld --patch-operations op='replace',path='/certificateName',value='newDomainCertName' Output:: { "domainName": "api.domain.tld", "distributionDomainName": "d123456789012.cloudfront.net", "certificateName": "newDomainCertName", "certificateUploadDate": 1462565487 }