# Integrate into Shopify Hydrogen Storefronts

## Hydrogen integration overview

Purple Dot integrates with your existing storefront and enables you to create pre-order experiences. When integrating with a hydrogen storefront Purple Dot, provides a set of components that can be used to build the integration.

Purple Dot supports [**Combined**](https://docs.getpurpledot.com/docs/shopify-stores/integrate-purple-dot-with-your-storefront/integrate-into-shopify-hydrogen-storefronts/shopify-hydrogen-combined-checkout) checkout flows for hydrogen stores. This checkout method allows the shopper to add a pre-order item to their cart, but also continue shopping for other in-stock and pre-order items. When they are ready to checkout, they can be presented with a checkout that allows them to combine both pre-order and in-stock items at once, and choose to either ship them together or separately. This flow uses your store’s normal Shopify cart.

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If you are unsure which checkout flow your store is configured for, please reach out to Purple Dot Support to confirm, or to switch from one checkout method to another.
{% endhint %}