macOS is the operating system that powers every Mac. It lets you do things you simply can't with other computers. That's because it's designed specifically for the hardware it runs on - and vice versa.
On a Mac, everything is designed to work just the way you expect it to - from operating it with simple, intuitive gestures to asking Siri to find a file to having your apps automatically update themselves.
Your Mac works with your other Apple devices in ways no other computer can. If you get a call on your iPhone, you can take it on your Mac. You can copy text or an image from one device and paste it into another with standard copy and paste commands.
The Finder lets you easily browse and organise the files on your Mac - and those stored in iCloud Drive.
Spotlight helps you quickly and effortlessly find what you want, like documents on your Mac, and flight departure and arrival times.
A simple two-finger swipe brings up Notification Centre - the same one you use on iPhone - where you can see all the alerts that have come in recently.
It's also where you'll find your Today view, which you can customise with helpful widgets or handy information pinned from Siri searches.
With every Mac, you get a collection of powerful apps. They're the same apps you use on your iPhone or iPad, so they'll feel instantly familiar. They all work with iCloud, so your schedule, contacts and notes are always up to date everywhere.
Every Apple app uses iCloud - it's the magic behind the seamless experience you have with all your Apple devices. So you always have your photos, videos, documents, email, notes, contacts, calendars and more on whatever device you're using.
macOS features powerful core technologies engineered for the most important functions of your Mac. The Apple File System manages all the data on your Mac, bringing a new level of security and responsiveness to flash-based systems.
With macOS, it's easy to transfer your files, photos and other data from a Windows PC to your Mac. Work with popular file types such as JPEG, MP3 and PDF, as well as Microsoft Word, Excel and PowerPoint documents.
And, of course, you can run Microsoft Office natively on a Mac. If you want, you can even run Windows on your Mac. Microsoft Windows is sold separately.