> For the complete documentation index, see [llms.txt](https://docs.langstack.com/welcome/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.langstack.com/welcome/get-started/learn-langstack/multiple-executions-time-duration-linked-app-and-execution-status/linked-app.md).

# Linked App

A Linked App is an application that can be defined to execute after the first application (ETL pipeline or Process) is executed completely.

* The Linked App can be any of the following applications: 
  * ETL pipeline
  * Process
* One application can be only linked with one other application, i.e., only (1) Linked App can be defined. 
* Only applications defined with Immediate execution settings are listed as Linked Apps. 
* The Linked App executes after the ETL pipeline or Process has been executed. 
* To add a Linked App to the ETL pipeline or Process, click on the \[+ Linked App] button in the Details tab.

{% embed url="<https://media.langstack.com/documentation/media/images/code/training_manual/chapter_10/ch10addlinkapp.png>" %}

* The settings for the Linked App include details for the **Next App** and the **Delay Type**.

{% embed url="<https://media.langstack.com/documentation/media/images/code/training_manual/chapter_10/ch10linkappsettings.png>" %}

* The Next App section consists of details related to the Linked App. It has the following fields:
  * App Type: Select Type of Linked App, i.e., ETL pipeline or Process.&#x20;
  * App Name: Select the Linked App (only applications with Immediate execution settings are listed).&#x20;
  * Startup Parameters: Enter the Startup Parameters for the Linked App (if applicable).

{% embed url="<https://media.langstack.com/documentation/media/images/code/training_manual/chapter_10/ch10nextapp.png>" %}

* The Delay Type section defines the delay before the Linked App is executed. Maximum allowed delay before running the Linked App is two (2) years.

{% embed url="<https://media.langstack.com/documentation/media/images/code/training_manual/chapter_10/ch10delaytype.png>" %}

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