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## Resource: Introduction

## Article: Introduction

## Article Link: https://dev.wix.com/docs/api-reference/business-solutions/cms/operations/background-tasks/introduction.md

## Article Content:

# About the Background Tasks API

> **Note for app developers:** Wix Data APIs require the site's [code editor](https://dev.wix.com/docs/develop-websites/articles/get-started/development-environments.md) to be enabled. If you are building a Wix app, add a [data collections extension](https://dev.wix.com/docs/build-apps/develop-your-app/extensions/backend-extensions/data-collections/about-data-collections-extensions.md) to automatically enable the code editor and create data collections when your app is installed on a site.


The Background Tasks API allows you to create and manage tasks that process [data items](https://dev.wix.com/docs/rest/business-solutions/cms/data-items/introduction.md). Tasks run in the background, so they don't block the user's ability to work on their site while items are processed.

Each task has a different type, which determines the kind of processing the task performs on the items of the specified collection. You can create tasks to:

- Copy data from one field to another for all items in a collection.
- Update field data for items that match a specified filter.
- Delete all items in a collection that match a specified filter.
- Update the publish status for items that match a specified filter.

## Before you begin

It's important to note the following points before starting to code:

- To run a task of the type `UPDATE_PUBLISH_STATUS`, the collection must have the Publish plugin to [control item visibility](https://support.wix.com/en/article/cms-controlling-live-site-item-visibility-from-your-collection).

## Use cases

- [Set items' Publish status](https://dev.wix.com/docs/api-reference/business-solutions/cms/operations/background-tasks/sample-flows.md).
- [Delete items by a query](https://dev.wix.com/docs/api-reference/business-solutions/cms/operations/background-tasks/sample-flows.md).

## Terminology

- **Field**: Where item content is stored in a collection. Collections can have multiple fields. Learn more [about collection fields](https://support.wix.com/en/article/cms-formerly-content-manager-about-your-collection-fields).
- **Field type**: The kind of content each field can contain. Learn more about [field types](https://support.wix.com/en/article/cms-formerly-content-manager-about-your-collection-fields#field-type).
- **Collection environment**: Each collection can have two separate versions, one for testing and one for the live site. Learn more about working with [sandbox and live collections](https://support.wix.com/en/article/cms-about-sandbox-and-live-collections-and-syncing#sandbox-collections).
- **Publish plugin**: Allows items in a data collection to be marked as draft or published. Published items are visible to site visitors, while draft items are not. Learn more about [controlling live site item visibility](https://support.wix.com/en/article/cms-controlling-live-site-item-visibility-from-your-collection).

@sdk_package_setup