The App Store will allow users to download and install applications with just one click, like on the iPhone, iPod touch and iPad. Developers will also be able to take a 70 percent cut of sales through the digital storefront, while Apple keeps 30 percent.
Like on iOS devices, software will be remotely hosted by Apple. But once applications are installed, they will run locally, like traditional software.
In both Lion and Snow Leopard, users will not be tied to the App Store for new software. Jobs said that the App Store will simply be an option for both developers and users, suggesting Mac OS X will not become a "walled garden" like iOS.