Resources: Api: Type: AWS::Serverless::Api Properties: StageName: Prod DefinitionUri: http://sam-demo-bucket/webpage_swagger.json # API With no definition URI and body ApiNoBody: Type: AWS::Serverless::Api Properties: StageName: Prod # Both Body & definitionUri can't be specified ApiWithBodyAndDefinitionUri: Type: AWS::Serverless::Api Properties: StageName: Prod DefinitionUri: s3://foo/bar DefinitionBody: a: b c: d