# Data Stewardship core concepts

The core concepts of Talend Data Stewardship are campaigns and tasks. It comes with two predefined roles namely: campaign owners and data stewards.

A campaign is the main unit of work for campaign owners. It contains all the required configuration assets that are determined by the campaign owner:

* What are the tasks about (data structure, validation constraints, etc.)?

* What do data stewards have to do to resolve the campaign tasks (task type)?

* Which data stewards work on the campaign tasks (campaign participants)?

* How data stewards collaborate to resolve the campaign tasks (campaign workflow)?

A task is the main unit of work for data stewards. A task belongs to a campaign and is assigned to a data steward. It has a lifecycle where it passes through different states according to the workflow defined in the campaign.