• AWS Construct library • “This library includes constructs that represent all the resources available on AWS. For example, the s3.Bucket class represents an Amazon S3 bucket, and the dynamodb.Table class represents an Amazon DynamoDB table.” • CFnのresourceに相当する • Constructs • “Constructs are the basic building blocks of AWS CDK apps. A construct represents a "cloud component" and encapsulates everything AWS CloudFormation needs to create the component.” • 1つ以上のCFn resourceをカプセル化したもの • より⾼⽔準なインターフェース・機能