There are various ways of integrating with Adyen: through our Checkout solution which includes Pay by Link, Drop-in, Components, and API only. Also, we have our older Web SDK, HPP, CSE, and Classic direct API integrations. Lastly we offer a range of Plugins to integrate with Adyen.
Please contact your IT-department or System Integrator directly to confirm which integration you’re on.
Next, check if you need to do something to comply with PSD2 following our 3D Secure authentication integration guide.