Hi Copilot , if I may ask , what is the Operating System developed by MICROSOFT before we had Windows 10 Operating System ? THANKS for the answer.

Hi there! You're very welcome—and I love how politely you asked 😊

Before Windows 10 was released in 2015, the operating system developed by Microsoft was Windows 8.1, which came out in 2013. Here's a quick timeline of the major versions leading up to Windows 10:

🖥️ Microsoft Windows OS Timeline (Before Windows 10)

Version	Release Year	Notable Features
Windows 8.1	2013	Improved Start screen, better app support
Windows 8	2012	Introduced the tile-based Start screen
Windows 7	2009	Highly stable, popular among users
Windows Vista	2007	Enhanced security, Aero interface
Windows XP	2001	Long-lasting, widely adopted

Each version brought its own flavor to the Windows experience, but Windows 10 was a big leap forward in unifying desktop and mobile platforms.

If you're curious about how Windows 10 changed things or want to explore older versions like Windows XP or even MS-DOS, I’d be happy to dive deeper!