Justin Tallis | AFP via Getty ImagesAn EU law that seeks to rein in large digital companies has officially kicked in, spelling big changes for primarily U.S. tech giants. CNBC runs through how the law impacts large U.S. tech companies — as well as consumers in the EU. The EU Digital Markets Act primarily impacts U.S. tech giants — the likes of Alphabet , Amazon , Apple , and Meta . The rules have already sparked big changes for tech giants in how they serve customers in the EU. It's likely more adjustments will come, as competitors to Big Tech firms aren't happy with the proposals put in place so far.

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Persons: Justin Tallis, Bill Echikson, Echikson, ByteDance, Apple Organizations: Apple, Facebook, Microsoft, Getty, Digital Markets, European Commission, Center for, CNBC, Big Tech, EU Digital Markets, Meta, Google, Companies, EU, Spotify Locations: EU, U.S, iPhones