When I used Braintree a few years ago, before it was acquired by PayPal and before Stripe launched in the UK, Adyen handled Braintree's merchant accounts (in Eu

When I used Braintree a few years ago, before it was acquired by PayPal and before Stripe launched in the UK, Adyen handled Braintree's merchant accounts (in Europe, at least). I'd never heard of them before (or since). I remember the signup/KYC process as being a massive pain, as we needed to do KYC with Adyen as well as Braintree. It took weeks. A few years later when Stripe launched in the UK I was totally blown away by how simple and quick it was to sign up.