Are you looking for "official" business strategy info…or what industry experts think is Apple's strategy?
Many companies don't make this sort of thing public. Mainly because if they officially made their business strategy public…then their competition would know what they are up to…and would counter with their own strategy to "foil" the Apple strategy.
Apple many times doesn't even release info about when the next model MacBook Pro (or any other computer model) will be released or what the new features will be. So they certainly wouldn't release their business strategy which would be even more encompassing. Add to this the fact that the electronics industry is very very very competitive & secretive…thus is less likely Apple would ever release their business strategy.
Apple is one of the most secretive companies out there…so I think that this info you are looking for is going to be VERY difficult to come by.
If you want/need what industry experts think Apple business strategy is…then just search the internet. You'll find lots of folks with opinions (everybody has an opinion).
Now it is possible that Apple does make some sort of "broad strokes" of business strategy info public. But this sort of stuff is VERY generic. So I guess it depends on how detailed this info needs to be to satisfy the parameters of your assignment/project.
- Nick