A merchant who wants to use Adyen as a payment service provider needs to sign up for an Adyen account. After this account is approved, it gives merchants access to Adyen's payment services, which can be managed and customized using the Customer Area interface or the Adyen API.
Adyen accounts have two levels: company and merchant. A company-level account determines the global settings for the company, while merchant-level sub-accounts detail specific settings for each merchant.
Initially an Adyen account operates in test mode, allowing merchants to run test payments and safely implement all integrations with the Adyen payments platform. After successfully passing all integration tests the Adyen account can be switched to live mode to accept real-time omnichannel payments.