Ask HN: Best payment processor?
For European merchants,  there is a payment processor  called Https:&#x2F;&#x2F;www.mondido.com&#x2F;en (I&#x27;m the founder). 
What makes Mondido different is the support for dynamic 3D-secure,  and other conversation optimization tools. If you are selling cross border,  this is a must since some issuing banks require 3ds on all purchases,  and others doesn&#x27;t support it.