Apps, Stacks & Constructs
Overview
The diagram above illustrates a high level overview of the AWS CDK.
At its core is the App.
App
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An application written in TypeScript, JavaScript, Python, Java, or C# that uses the AWS CDK to define AWS infrastructure
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It defines 1 or more Stacks
Stacks
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Unit of deployment within the AWS CDK
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Any number of stacks can be defined for an App
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Stacks contain Constructs
Constructs
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Represents a reusable AWS cloud resource .e.g. S3 Bucket, EC2 Instance, IAM Role, DynamoDB Table..
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A Stack can contain 1 or more Constructs
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Encapsulates everything AWS CloudFormtion requires to create cloud infrastructure
CloudFormation
You will notice the use of CloudFormation here.
The AWS CDK is a development framework for defining AWS cloud infrastructure in code.
CloudFormation provides the mechanism for provisioning the cloud infrastructure.
Further reading
AWS Solutions Constructs – A Library of Architecture Patterns for the AWS CDK