Meta Platforms Inc. was hit with a €798 million ($841 million) fine by European Union regulators by tying its Facebook Marketplace service to the social network, the US tech giant’s first ever penalty for EU antitrust violations.

The bloc's executive arm says Facebook users are exposed to the platform's Marketplace service whether they want to be or not, resulting in antitrust violations.

Meta Platforms said it would appeal an $843 million European Commission fine for allegedly tying its classified-ads platform to Facebook, undermining competition.The commission on Thursday fined the Facebook owner 797.