If you're building a SaaS for the Latin American market, you will inevitably face a hard architectural decision: how do you support multiple payment providers without turning your codebase into a mess of if/else statements?

You might start with Stripe, since it's the standard for international recurring billing. Then a client asks for PIX, and you need Mercado Pago. Another client wants boleto bancário , and now you need Asaas.

If you're not careful, your PaymentController turns into a 500-line monster full of provider-specific logic.

Here's the architecture I use to solve this: the Driver/Adapter pattern with a typed interface .

The Core Idea

The goal is simple: your domain depends on a single contract, and each provider is just a new class.…