You can use the Inventories sub-API to showcase products with
[local (in-store)](https://support.google.com/merchants/answer/14615117) or
[regional availability](https://support.google.com/merchants/answer/14644124)
without charge on Google.

As a prerequisite, upload your products to a primary data source.
Inventory data is supplemental to your primary product data.

> [!IMPORTANT]
> **Key Term:** In the Inventories sub-API, products you sell in physical stores are called local products. Products you sell in specific regions are called regional online products.

If you're a third-party provider, you can use the Inventories sub-API to
build an interface for your business to manage where their products are
available.

You can use the Inventories sub-API for the following tasks:

Showcase local products on Google.

- [Add in-store information to your local products](https://developers.google.com/merchant/api/guides/inventories/add-local-inventory).
- [Keep in-store information up to date](https://developers.google.com/merchant/api/guides/inventories/update-local-inventory).

Showcase regional online products on Google.

- [Add regional information to your online products](https://developers.google.com/merchant/api/guides/inventories/add-regional-inventory).
- [Keep regional information up to date](https://developers.google.com/merchant/api/guides/inventories/update-regional-inventory)

### Resources

The Inventories sub-API includes the following resources:

- [`LocalInventory`](https://developers.google.com/merchant/api/reference/rest/inventories_v1/accounts.products.localInventories) for in-store products
- [`RegionalInventory`](https://developers.google.com/merchant/api/reference/rest/inventories_v1/accounts.products.regionalInventories) for regional online products

For more information, see [Reference documentation](https://developers.google.com/merchant/api/release-notes/rest/inventories).