Microsoft Cortana is a virtual assistant created by Microsoft to help users manage tasks and find information quickly. It can answer questions, set reminders, and provide updates on weather and news. Cortana is designed to make everyday tasks easier, allowing users to interact using voice commands or text. Cortana is integrated into various Microsoft products, including Windows 10 and Microsoft 365. This means you can use it on your computer, smartphone, or other devices. With its ability to learn from user preferences, Cortana aims to provide personalized assistance, making it a handy tool for both work and personal life.