makasim

I did not start from scratch, Payum library has 3 years history. It also supports many gateways: http://payum.org/doc/1.0/Core/supported-gateways

It is already used in many projects, in production, well tested. The 1.0.0 version was released not long ago.

Setup PayumServer in the blink of an eye: https://medium.com/@maksim_ka2/setup-payumserver-with-docker...

Not sure I get you. About PIC DSS. PayumServer do not store any sensitive info anywhere, even in the http session. It is passed through the server to a payment gateway. PayumServer uses iframe or javascript solution (which you mention above) if a payment gateway supports it. For example Stripe.Js supports it and PayumServer reuse this feature.

As far as I know (feel free to correct me) it is just a library, not a service. It is better to compare it with Payum library.

It is not end solution. It does not provide API, backend UI, integration with a storage. It takes a bit more time to setup it. Plus, you have to be a developer (preferably Ruby one) to use it.

PayumServer requires as few programming knowledge as possible. You can use it with any of your app, written on whatever language you like.