Salesforce B2C Commerce 24.7 > Developing Your Site > Legacy Developer Documentation > Site Genesis > Migrating Your Storefront to SGJC Controllers > SiteGenesis Features > SiteGenesis Promotions

SiteGenesis Coupons

The coupon feature is implemented in the SiteGenesis application as follows. Review each file to understand how the SiteGenesis application handles coupons.

Element	Description
Form	`billing.xml` `billingcoupon.xml` `cart.xml`
Pipeline	`Cart.xml` `COBilling.xml` `COSummary.xml`
Script	`cart/ValidateCartForCheckout.ds`
Template	`checkout/billing/billing.isml` `checkout/billing/couponapplyjson.isml` `checkout/cart/cart.isml` `checkout/summary/summary.isml`
Resources	`checkout.properties` `forms.properties`