# Constructs

> Software-defined persistent state

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## What are constructs?

Constructs are classes which define a "piece of system state". Constructs can be composed together to form higher-level building blocks which represent more complex state.

Constructs are often used to represent the _desired state_ of cloud applications. For example, in the AWS CDK, which is used to define the desired state for AWS infrastructure using CloudFormation, the lowest-level construct represents a _resource definition_ in a CloudFormation template. These resources are composed to represent higher-level logical units of a cloud application, etc.

## Contributing

This project has adopted the [Amazon Open Source Code of
Conduct](https://aws.github.io/code-of-conduct).

We welcome community contributions and pull requests. See our [contribution
guide](./CONTRIBUTING.md) for more information on how to report issues, set up a
development environment and submit code.

## License

This project is distributed under the [Apache License, Version 2.0](./LICENSE).