# Configure optional items

Enable customers to purchase complementary products at checkout by using optional items.

## Index

This article has multiple variants. Fetch one of the following URLs to view specific content for your use case:

- [Full hosted page](https://docs.stripe.com/payments/checkout/optional-items.md?payment-ui=stripe-hosted)
- [Full embedded page](https://docs.stripe.com/payments/checkout/optional-items.md?payment-ui=embedded-page)