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.

Note

Constructs are part of the Construct Programming Model (CPM). They're also used by other tools such as CDK for Terraform (CDKtf), CDK for Kubernetes (CDK8s), and Projen.

A construct can represent a single AWS resource, such as an Amazon Simple Storage Service (Amazon S3) bucket. A construct can also be a higher-level abstraction consisting of multiple related AWS resources. Examples of such components include a worker queue with its associated compute capacity, or a scheduled job with monitoring resources and a dashboard.

The AWS CDK includes a collection of constructs called the AWS Construct Library, containing constructs for every AWS service

https://docs.aws.amazon.com/cdk/v2/guide/constructs.html