The Code of Practice on Disinformation (CoP) is a self-regulatory framework initiated by the EU Commission and signed by the major technology companies (Google, Meta, Microsoft, TikTok), among others. It provides for numerous commitments that and how platforms should act against dis- and misinformation. These include, for example, transparency rules, the enforcement of community guidelines or the obligation to cooperate with fact-checkers and researchers. The first version of the CoP was published in 2018 and subsequently revised. The current version was published in 2022 and contains 128 concrete measures against dis- and misinformation. You can find the full text of the code here.