Prior to its construction, the land was occupied by the company Four-Phase Systems (later acquired by Motorola).

With the return of Steve Jobs to Apple in 1997, the campus became the company's official headquarters and its buildings were renamed "IL" instead of "R&D".

Jobs also banned employees' pets from the building[3] and dramatically improved the cafeteria menu.

[4] The Apple Campus is located on the southeast corner of Interstate 280 and De Anza Boulevard, and occupies 32 acres (130,000 m2)[5] in six buildings spread over four floors.

Beyond Infinite Loop, the whole Apple Campus occupies an additional thirty buildings scattered throughout the city.