> Portal Navigation:
> 
> - Append `.md` to any URL under `https://dev.wix.com/docs/` to get its markdown version.
> - Pages are either content pages (article or reference text) or menu pages (a list of links to child pages).
> - To get a menu page, truncate any URL to a parent path and append `.md` (e.g. `https://dev.wix.com/docs/sdk.md`, `https://dev.wix.com/docs/sdk/core-modules.md`).
> - Top-level index of all portals: https://dev.wix.com/docs/llms.txt
> - Full concatenated docs: https://dev.wix.com/docs/llms-full.txt

## Resource: Service Plugins

## Namespace: ecom-payment-settings

## Article: Introduction

## Article Link: https://dev.wix.com/docs/velo/events-service-plugins/e-commerce/service-plugins/ecom-payment-settings/introduction.md

## Article Content:

# Introduction
The Payment Settings service plugin (formerly SPI) allows you to apply custom payment settings during the payment process of an order. 

Currently, the only payment setting available to customize is whether to apply 3DS to an order. 
If 3DS is required, the customer will have to pass an additional layer of security before completing their payment. For example:

![3DS popup](..assets/images/3ds.png "3DS popup")

Learn more:
+ [Velo: Custom App Extensions Using Service Plugins](https://support.wix.com/en/article/velo-custom-business-app-extensions-using-spis-beta)
+ [Tutorial: Payment Settings Service Plugin](https://dev.wix.com/docs/develop-websites/articles/code-tutorials/wix-e-commerce-stores/tutorial-payment-settings-custom-extension.md)

### Before you begin
It's important to note the following points before starting to code:
+ To collect payments, a Wix site must [connect a payment provider](https://support.wix.com/en/article/connecting-a-payment-provider). 
+ We recommend [contacting payment providers directly](https://support.wix.com/en/article/receiving-payouts-from-third-party-payment-providers) to confirm which payment settings they have implemented as part of their Wix integration.

### To add a service plugin
1. [Add the plugin to your site](https://dev.wix.com/docs/develop-websites/articles/coding-with-velo/integrations/custom-extensions-spis/custom-app-extensions-using-sp-is.md#step-1-create-a-new-extension-on-your-wix-site).
2. Update the [`getConfig()`](https://www.wix.com/velo/reference/spis/wix-ecom/ecom-payment-settings/getconfig) function in the **-config.js** file that is added to your site during step 1.
3. Update the [`getPaymentSettings()`](https://www.wix.com/velo/reference/spis/wix-ecom/ecom-payment-settings/getpaymentsettings) function in the **.js** file that is added to your site during step 1.

### Terminology

+ **3 Domain Security (3DS):** An additional layer of security for online credit and debit card transactions. The name refers to the three domains which interact using the protocol: the card issuer, the acquiring bank, and the payment gateway that facilitates the transaction. Learn more [about 3DS payments with third-party payment providers](https://support.wix.com/en/article/about-3d-secure-3ds-payments-with-third-party-payment-providers).
+ **Payment Providers:** Different payment methods available to your Wix site. Learn more about [accepting payments](https://support.wix.com/en/article/accepting-payments-an-overview).