> For the complete documentation index, see [llms.txt](https://docs.digitalriver.com/digital-river-api/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.digitalriver.com/digital-river-api/integration-options/checkouts.md).

# Direct integrations

With Direct Integrations, you primarily use [checkouts](https://docs.digitalriver.com/digital-river-api-reference/2021-12-13/checkouts), along with [Drop-in payments](/digital-river-api/payments/payment-integrations-1/drop-in.md) or [Elements](/digital-river-api/payments/payment-integrations-1/digitalriver.js.md), to construct a customer's checkout and payment experience.

In this section, you can read about [how a standard Direct Integrations flow works](/digital-river-api/integration-options/checkouts/process-flow.md). You'll also find information on how to:

* [Build checkouts](/digital-river-api/integration-options/checkouts/creating-checkouts.md)
* [Build payment workflows](/digital-river-api/integration-options/checkouts/building-you-workflows.md)
* [Manage subscriptions](/digital-river-api/integration-options/checkouts/subscriptions.md)
* [Use Digital River's fulfillment service](/digital-river-api/integration-options/checkouts/handling-digital-river-coordinated-fulfillments.md)

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