--- title: Guide description: Guide --- [Skip to content](https://inai.io/guide#main-content) [Webinar](https://inai.io/webinar/airlines-auth-rate) Strategies to optimize auth rates for the airlines - 07 Dec 2023 - 08:30 AM GMT [Register now](https://inai.io/webinar/airlines-auth-rate) Inai is now part of Chargebee! 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[![](https://inai.io/hubfs/global-payment-method-guide-localize-your-ecommerce-2.webp)](https://inai.io/guide/buy-now-pay-later) ## [What is Buy Now Pay Later](https://inai.io/guide/buy-now-pay-later) Do you feel the need to buy something but wish you could pay for it later? BNPL is a recent trend... [![](https://inai.io/hubfs/global-payment-method-guide-localize-your-ecommerce-1.png)](https://inai.io/guide/what-is-a-payment-facilitator) ## [What is a Payment Facilitator? ( PayFac )](https://inai.io/guide/what-is-a-payment-facilitator) Payment facilitation (PayFac) is an emerging modelfor managing transactions between buyers and... [![](https://inai.io/hubfs/Header%20-%20A%20Comprehensive%20Guide%20to%20Subscriptions%20Management%20(1)-1.png)](https://inai.io/guide/subscription-management) ## [A Comprehensive Guide to Subscriptions Management | inai](https://inai.io/guide/subscription-management) Subscriptions are everywhere, from Netflix and Amazon Prime, which offer video-based content for a... [![](https://inai.io/hubfs/A%20Comprehensive%20Guide%20to%20Unified%20Payments%20Interface.png)](https://inai.io/guide/a-comprehensive-guide-to-unified-payments-interface) ## [A Comprehensive Guide to Unified Payments Interface](https://inai.io/guide/a-comprehensive-guide-to-unified-payments-interface) As a digital business owner or merchant, you must've heard of UPI and seen UPI QR codes at local... 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