Starting August 7th, 2019 all previously branded 'Mastered For iTunes' content is changing to 'Apple Digital Masters'. The change will be featured both in the iTunes store and Apple Music streaming service.
Independant artists have difficulty getting into the Mastered For iTunes program, but if you wanted to try to deal directly with apple to get in here are the requirements directly from Apple. Even if you meet the requirements they may still referr you. On top of that, they also have payment thresholds and you may never get paid if you don't meet the threshold for your first payment. And now the requirements.
Technical Requirements:
Nick Landis is now a Certified Mastered For iTunes Mastering Engineer.