api.yml

#For custom domain on API
Resources:
  Domain:
    Type: AWS::ApiGateway::DomainName
    Condition: ProdStagingEnv
    Properties:
      DomainName: ${self:custom.system.apiDomain.${opt:stage, 'dev'}}
      EndpointConfiguration:
        Types:
          - EDGE
      CertificateArn: 'arn:aws:acm:REGION:ACCOUNT:certificate/CERTIFICATE'

  ApiGatewayDeployment:
    Type: "AWS::ApiGateway::Deployment"
    Condition: ProdStagingEnv
    DependsOn: Domain
    Properties:
      Description: "Environment"
      RestApiId: { Ref: ApiGatewayRestApi }
      StageName: "dev"
    
  BasePathMapping:
    Type: AWS::ApiGateway::BasePathMapping
    Condition: ProdStagingEnv
    DependsOn: ApiGatewayDeployment
    Properties:
      DomainName: ${self:custom.system.apiDomain.${opt:stage, 'dev'}}
      RestApiId: { Ref: ApiGatewayRestApi }
      Stage: "dev"