When you code in Swift, NSObject is the most basic class of the Apple. This is the simplest and most generic component.
NS stands for “NeXTSTEP”, that was the company Steve Jobs formed after leaving Apple on September 12, 1985, and this is how Apple started.
September 12, 1985 was the day Jobs told Apple’s board of directors about it. He specifically told them that he was going to take a few employees and start a firm to make computers for higher education.