> For the complete documentation index, see [llms.txt](https://docs.ecommerce.seb.ee/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ecommerce.seb.ee/integration/mobile-sdk/ios-sdk/using-the-sdk.md).

# Using the SDK

Integration guides for each payment flow and each kind of call site

Build a full integration once you have completed the Quickstart.

* Hosted checkout - present the checkout page, match the return URL, preselect a payment method.
* Native card form - collect card details in your own UI, with on-device encryption and 3-D Secure.
* Handling the result — the four outcomes, the callback contract, and supplying your own status lookup.
* Objective-C and SwiftUI - call sites outside a plain Swift [`UIViewController`](https://developer.apple.com/documentation/uikit/uiviewcontroller).

Both payment flows share the same request validation, the same result type, and the same one-callback guarantee, so what you learn in one transfers to the other.


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