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## Resource: Introduction

## Article: Introduction

## Article Link: https://dev.wix.com/docs/api-reference/business-management/functions/function-activations/introduction.md

## Article Content:

# About the Function Activations API

The Function Activations API allows you to activate and deactivate [functions](https://support.wix.com/en/article/functions-about-functions). Function activation is the final step in the function lifecycle that makes functions ready to execute when triggered by Wix business solutions.  Use this API together with other [Wix Functions APIs](https://dev.wix.com/docs/api-reference/business-management/functions/about-wix-functions-apis.md).

With the Function Activations API, you can:

- Control when functions go live and become available for execution by business solutions.
- Deploy updates to existing functions by reactivating them.
- Temporarily disable functions without deleting them, allowing for maintenance or troubleshooting.

## Function activations in the Wix Functions ecosystem

Function activations are what makes your functions live. When a function is first created, it is a draft. To activate it, call [Upsert Function Activation](https://dev.wix.com/docs/api-reference/business-management/functions/function-activations/upsert-function-activation.md). Any further changes to the function will only take effect after you reactivate the function by calling Upsert Function Activation again. This means that when you update a function, the changes only go live when you activate it again.

You can deactivate a function by calling [Delete Function Activation](https://dev.wix.com/docs/api-reference/business-management/functions/function-activations/delete-function-activation.md).


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