# Core concepts

## Workbooks

The main resource you interact with in Code Workbook is a **Workbook**. Workbooks are used to import datasets from Foundry and transform these input datasets for purposes such as:

* Cleaning and joining raw data imported from some external source to produce curated datasets for other users.
* Analyzing processed datasources to derive useful insights.
* Training and applying models to do predictive analysis.
* Creating parameterized visualizations to display in a report.

[Learn more about workbooks.](../workbooks-overview/index.md)

## Transforms

**Transforms** are pieces of logic that take one or more inputs and return a single output. Inputs and outputs can be Foundry datasets or models.

[Learn more about transforms.](../transforms-overview/index.md)

## Templates

Code **templates** enable users with a range of technical experience to collaborate by abstracting code away behind a simple form-based interface. Values selected by users are substituted into a code template, which can then be run like any other transform in the Workbook.

[Learn more about templates.](../templates-overview/index.md)

## Environment

Each Code Workbook is associated with an **environment**. An environment includes a set of Conda packages and Spark settings installed on the Spark module backing computation in the Workbook.

[Learn more about environments.](../environment-overview/index.md)

## Branching

**Branching** in Code Workbook provides a version control experience tailored to data transformation, enabling teams to operate on logic and data simultaneously in a Workbook.

[Learn more about branching.](../branching-overview/index.md)