Utilize the input text as a context reference, choose the right relationship between things and iOS from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

And you see even as Apple announces things like applications that will run on iOS and the Mac, they don't necessarily announce that these same applications will run on iOS and say, some other manufactured device, which means that you can grow into a scoping and policies for Apple devices that actually encourages the notion of an Apple Enterprise Management system.

Answer: platform