> ## Documentation Index
> Fetch the complete documentation index at: https://docs.appcharge.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Choose a Payment Model

***Note:** For more information on our in-game checkout solutions and to start integrating, please view the [Mobile Checkout SDK](../introduction) documentation in the API reference section.*

Appcharge’s **In-Game Checkout SDK** provides a seamless purchase experience within games, offering two different models for handling purchase confirmations:

1. **App Integration (IAP-like):** The purchase process is handled within the game client, and the publisher manually updates the player's balance after receiving a confirmation from the SDK.
   * For more information, please view the [App Integration (IAP-like)](./app-integration-model) flow using consume.
2. **Server-to-server (Webstore-like):** The purchase confirmation is communicated directly between Appcharge and the publisher's backend via the [Player Orders Reporting Webhook](/../../api-reference/checkout/orders/player-order-reporting-webhook), enabling automatic balance updates on the server-side.

* For more information, please view the [Server-to-server (Webstore-like)](./server-to-server-model) flow using award.