AWS Data Pipeline is no longer available to new customers. Existing customers of AWS Data Pipeline can continue to use the service as normal. [Learn more](https://aws.amazon.com/blogs/big-data/migrate-workloads-from-aws-data-pipeline/)

# AWS Data Pipeline Concepts
<a name="dp-concepts"></a>

Before you begin, read about the key concepts and components for AWS Data Pipeline.

**Topics**
+ [Pipeline Definition](dp-how-pipeline-definition.md)
+ [Pipeline Components, Instances, and Attempts](dp-how-tasks-scheduled.md)
+ [Task Runners](dp-how-remote-taskrunner-client.md)
+ [Data Nodes](dp-concepts-datanodes.md)
+ [Databases](dp-concepts-databases.md)
+ [Activities](dp-concepts-activities.md)
+ [Preconditions](dp-concepts-preconditions.md)
+ [Resources](dp-concepts-resources.md)
+ [Actions](dp-concepts-actions.md)