One of the European Union’s major pieces of legislation in the digital era, the Digital Markets Act (DMA), entered into force on 1 November 2022. It introduces ex-ante regulation—setting the ground rules for what is and is not acceptable in the digital markets—for large digital platforms and designates so-called “gatekeepers,” which will be subject to increased scrutiny. The DMA will apply on 2 May 2023 following a six-month transition period. During this six-month period, the European Commission (Commission) will designate the gatekeepers. Gatekeeper obligations will then apply starting in March 2024.