Yosemite
Yosemite refers to version 10.10 of Apple's Mac operating system, known as OS X Yosemite. Released in 2014, it introduced a significant visual and functional overhaul, designed to align the Mac's interface more closely with Apple's mobile iOS.
Key features of OS X Yosemite:
Redesigned user interface. The operating system moved away from the realistic, or skeuomorphic, design of previous versions to a flatter, more modern look.
This included: Translucent elements in toolbars and sidebars that allow the background to show through, creating a blurred-glass effect. A "Dark Mode", which introduced a darker color scheme for the menu bar and Dock. Refined typography, with a switch to the thinner Helvetica Neue as the system font. Enhanced "Continuity" features. This improved integration between Mac computers and iOS devices like iPhones and iPads. Handoff allows users to start a task on one device and seamlessly continue it on another. Phone calls and SMS enabled users to make and receive phone calls and text messages directly from their Mac. Instant Hotspot connected a Mac to a nearby iPhone's hotspot automatically.
iCloud Drive. This was an enhancement to Apple's cloud storage, making it function like a standard folder in the Finder for easier file management.
Redesigned applications. Apple updated the appearance and functionality of many of its built-in apps, including Safari, Mail, and Messages.
Improved Spotlight search. The search feature was more prominently placed and offered more comprehensive results from sources like Wikipedia, news, and maps.