Apple was fined $2 billion by the European Union for using the App Store to stifle competition in the music streaming market. The penalty follows a five-year investigation prompted by Spotify's complaints. The E.U. found that Apple abused its dominant position and will now have to allow music streaming developers to communicate freely with their users. Apple plans to appeal the ruling, arguing that Spotify has benefited from its tools without paying commissions. The fine is the latest in a series of penalties targeting the App Store, as regulators seek to address concerns about its practices. Apple's proposal to comply with new laws has sparked criticism from developers, including Spotify, which has long criticized the App Store's in-app payment system and commission fees.