> 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: Cart



## Article: Introduction

## Article Link: https://dev.wix.com/docs/velo/apis/wix-ecom-backend/cart/introduction.md

## Article Content:

---
title: Introduction
---
# Introduction

> **Note:** This module is
> [universal](/api-overview/api-versions#universal-modules).
> Functions in this module can run on both the backend and frontend.

The eCommerce Cart API provides functionality for creating and managing carts, as well as for [creating a checkout](https://dev.wix.com/docs/velo/api-reference/wix-ecom-backend/cart/create-checkout.md) based on an existing cart. The cart is the first phase of an eCommerce purchase flow, followed by checkout, then order. A cart holds information about items for purchase, prices, discounts, site details, and more.

A cart can be created either by using the [createCart()](https://dev.wix.com/docs/velo/api-reference/wix-ecom-backend/cart/create-cart.md) function, or by [adding an item to the cart](https://dev.wix.com/docs/velo/api-reference/wix-ecom-backend/cart/add-to-cart.md).

Estimate the cart's totals (including shipping costs) using the [estimateTotals()](https://dev.wix.com/docs/velo/api-reference/wix-ecom-backend/cart/estimate-totals.md) function.

## Before you begin
To assist in moving from the [Stores Cart API](https://www.wix.com/velo/reference/wix-stores/cart) to the eCommerce Cart API, refer to the [Cart Conversion Table](https://dev.wix.com/docs/velo/api-reference/wix-ecom-backend/cart/stores-to-e-commerce-cart-conversion-table.md).

To use the Wix eCommerce Cart API, import `{ cart }` from the `wix-ecom-backend` module:

```javascript
import { cart } from 'wix-ecom-backend'; 
```