Microsoft Office Professional 2021 for Windows is available for a significant discount of approximately 81 percent off the regular price, offering a one-time purchase license for a single PC. The license includes essential applications such as Word, Excel, PowerPoint, Outlook, Access, and Publisher, and provides a lifetime key for use on one Windows computer without an expiration. Office 2021 features modern functionalities in Excel, PowerPoint, and Word, but does not include the latest features available in Microsoft 365, which operates on a subscription model. Users can expect security patches and stability improvements for Office 2021, but no new features will be added. This offer is particularly beneficial for students, sole proprietors, and small teams using a single Windows PC. However, it may not be suitable for those needing multi-device support, substantial cloud storage, or Mac installations. Before purchasing, it is advisable to verify the seller’s reputation and ensure compatibility with system requirements.