The article sets out the regime regulating liability concerning lack of conformity of the goods with the contract. More specifically, the writer attempts a comparison between the applicable solutions under Greek law and the provisions of the novel Directives (EU) 2019/770 and 2019/771. He explains that those two Directives repeal the previous Directive 1999/44, which considerably renovated national legislation, as it had modified, inter alia, the provisions of the Greek Civil Code regarding liability of the seller. Now, Directive 2019/771 introduces significant changes in relation to the underlying conditions regarding the seller’s liability and the buyer’s rights. The writer further clarifies that Directive 2019/770 brings in similar provisions in respect of another important category of contracts: contracts for the supply of digital content and digital services. Finally, the writer proceeds to elaborate on many of the Articles of the two Directives, analysing their meaning and content