A lot has been said about Facebook being an incumbent digital platform threatening competition on the markets (and arguably much more remains to be said). However, the ‘law of Facebook’ incorporates different dimensions ‒ e.g., public, international, transnational, European, comparative ‒ that are at least as important as competition law and policy. It is with this premise in mind that the Jean Monnet Chair in Law & Transatlantic Relations, City Law School and the Institute for the Study of European Law (ISEL) at City Law School hosted a webinar to shed light on these further dimensions of the law of Facebook and discuss whether it can function as a blueprint to understand legal issues ‒ and engineer possible solutions ‒ concerning the law of big techs in general. Let’s delve into the central matters discussed by the panellists concerning the multidimensional law of Facebook.