The main difference between Microsoft 365 and Office 2024 Professional lies in the purchase method and features offered. Microsoft 365 is a subscription service that is constantly updated with the latest features along with additional benefits such as significant OneDrive storage.
Office 2024 Professional, on the other hand, is a one-time purchase that gives users access to the classic Office applications with all security and application updates. As such, you can save a lot of money on subscriptions.
You will not have additional OneDrive storage but there are alternatives for this.

Yes, Office 2024 Professional supports both 32-bit and 64-bit versions on Windows, while the Mac version only supports 64-bit. This ensures that users can choose the version that best suits their system architecture

Although Office 2024 Professional can be used offline for most features, Internet access is required for activation, receiving updates, and using certain features such as online storage services. Regular Internet connection also helps ensure activation status and receipt of important security updates

Office 2024 introduces several new features and enhancements, such as XLOOKUP and Dynamic Arrays in Excel, a dark mode in Word, and improved slide show recording capabilities in PowerPoint. These updates improve the user experience and provide advanced tools for data analysis and presentation

For Windows users, Office 2024 Professional requires Windows 10 Home or Windows 10 Pro or Windows 11 Home or Windows 11 Pro or later. This ensures that the software performs optimally on systems that are up-to-date with Microsoft's latest operating system innovations

Before installing Office 2024 on a Mac, it is important to first check that your device meets the system requirements. Apple only allows Office installation on the latest three versions of macOS. So at the time of this post, you need at least MacOS 13.X.

A license for Office 2024 Professional allows 1 installation on a single device. The version for 5 you can install on 5 devices. Office 2024 Professional plus with account you can install on 1 device and can reinstall unlimited times on the same or a new/different device. This highlights the importance of choosing the right device for your installation

Depending on the subscription, Office 2024 includes desktop versions of Outlook, Word, Excel, PowerPoint, OneNote, Access (PC only) and Publisher (PC only). Also, Office 2024 includes integration with MS Teams.