---
schema_version: "1"
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title: Extensibility
collection: developer
version: current
locale: en-us
portal_url: https://docs.salesforce.com/developer/current/en-us/commerce-cloud/commerce-api/guides/extend.md
canonical_url: https://developer.salesforce.com/docs/commerce/pwa-kit-managed-runtime/guide/extend.html
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content_type: documentation
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  - Composable Storefront
  - Salesforce APIs
---
# Extensibility

Learn how to use the B2C Commerce API (SCAPI) to seamlessly customize and extend functionalities for your unique needs.

- To extend the functionality of existing APIs, use [Hooks](https://developer.salesforce.com/docs/commerce/commerce-api/guide/extensibility_via_hooks.html).
- If you need additional functionality that is not available using the existing hooks, see [Custom APIs](https://developer.salesforce.com/docs/commerce/commerce-api/guide/custom-apis.html).