Office 2019 is a version of Microsoft’s Office productivity suite, released on September 24, 2018. It includes classic versions of Word, Excel, PowerPoint, Outlook, and, depending on the edition, other applications like Publisher, Access, and Skype for Business. Unlike Office 365 (now called Microsoft 365), which is a subscription-based service that receives regular updates, Office 2019 is a one-time purchase with no feature updates, although it does receive security updates.

Key features of Office 2019 include:

1. Word 2019: New tools for translation, learning, and accessibility. It also introduced the focus mode, which removes distractions for a better writing experience.
2. Excel 2019: New formulas, charts, and PowerPivot improvements for better data analysis.
3. PowerPoint 2019: Enhanced visual effects such as Morph transition, new chart types, and support for 3D models and SVG images.
4. Outlook 2019: Updated contact cards, Office 365 Groups (for business users), and focused inbox for better email management.

Office 2019 is designed for users and businesses that don’t need the regular updates provided by Office 365 but want to have a standalone version with the latest features available at the time of purchase.