Afaict, this does apply to all online platforms. From the definitions: (2) ‘online intermediation services’ means services which meet all of the following req

Afaict, this does apply to all online platforms. From the definitions: (2) ‘online intermediation services’ means services which meet all of the following requirements: (a) they constitute information society services within the meaning of point (b) of Article 1(1) of Directive (EU) 2015/1535 of the European Parliament and of the Council (12); (b) they allow business users to offer goods or services to consumers, with a view to facilitating the initiating of direct transactions between those business users and consumers, irrespective of where those transactions are ultimately concluded; (c) they are provided to business users on the basis of contractual relationships between the provider of those services and business users which offer goods or services to consumers; IANAL, of course.