FACTOR-A/DEPT® and the Dept Marketplaces GmbH (hereinafter referred to as “FACTOR-A/DEPT® “) assists manufacturers and brands (hereinafter referred to as “clients”) in their operative tasks in cooperation with Amazon. To this end, FACTOR-A/DEPT® provides operational advice, implements operational tasks at the request of the client and operates software – factor-a suite and amabid (hereinafter referred to as “factor-a software”) – which is made available to the client within the framework of a cooperation. The factor-a software offers analyses, evaluations and recommended actions for the products sold to Amazon by the client.