Apple's services unit has become a critical part of Apple's appeal to investors over the past decade. Its gross margin was 74% in the September quarter compared to Apple's overall margin of 46.2%.

Services contains a wide range of different offerings. According to the company's SEC filings, it includes advertising, search licensing revenue from Google, warranties called AppleCare, cloud subscription services such as iCloud, content subscriptions such as the company's Apple TV+ service, and payments from Apple Pay and AppleCare.