> 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: Introduction ## Article: About Shipping Rates ## Article Link: https://dev.wix.com/docs/api-reference/business-solutions/e-commerce/extensions/shipping-rates/introduction.md ## Article Content: # About Shipping Rates Shipping Rates enable businesses to integrate custom shipping rate calculations and external shipping providers with the eCommerce platform. This functionality allows businesses to provide dynamic shipping pricing, connect with specialized shipping services, and implement custom shipping logic. This section covers: - **[Shipping Rates Integration Service Plugin](https://dev.wix.com/docs/rest/business-solutions/e-commerce/extensions/shipping-rates/shipping-rates-integration-service-plugin/introduction.md)**: Integrate custom shipping rate calculations and external shipping providers for dynamic pricing and delivery options. ## See also - [About Extensions](https://dev.wix.com/docs/rest/business-solutions/e-commerce/extensions/introduction.md) - [About Purchase Flow](https://dev.wix.com/docs/rest/business-solutions/e-commerce/purchase-flow/introduction.md) - [Extend the eCommerce Platform with Service Plugins](https://dev.wix.com/docs/rest/business-solutions/e-commerce/guides/extend-the-e-commerce-platform-with-service-plugins.md)