Actually we have clients that offer a service for users. Some of them charge money for their services.
We want to integrate Paypal, so that the users can buy the service from the customer and the money lands on the customers (merchant) Paypal account - so that we, as the platform owner, do not need to touch the money.
Since we have for all other payments a payment provider (which does not support Paypal), we need our own solution for this.
I just found Paypal's Adaptive Payments - but this looks like a big implementation.
I thought more about a solution where our clients can look into their Paypal account, give us an ID and we implement for them the "Express Checkout" for their product.
Is this the only solution or is there a better product from Paypal?