question

We have a number of payment processing systems integrated. For iOS, Google Play, and Amazon, we have receipt validation (iOS and Android are described here, and Amazon is effectively the same: https://blog.playfab.com/blog/show-me-money-receipt-validation-ios-and-android/). For Playstation Network and Xbox Live, we have entitlement checks (very similar to receipt validation - if you're an approved developer for either system, you can contact us at devrel@playfab.com for more info). And for the cart-style payment providers (Facebook, PayPal, Steam, Xsolla), we have the StartPurchase flow (https://api.playfab.com/docs/tutorials/landing-commerce/non-receipt-payment-processing). And of course, we'll be adding more over time.