Our payment/billing backend is built so that it can support multiple payment providers, as some larger customers e.g. pay by bank transfer. Stripe is just there

Our payment/billing backend is built so that it can support multiple payment providers, as some larger customers e.g. pay by bank transfer. Stripe is just there to store sensitive billing data like credit card numbers and actually charge customers, everything else happens in our backend. Stripe supports that use case well, they e.g. provide web hooks and an event log which you can replay locally to integrate with them, which makes it easy to run your own billing/invoicing logic on top.