| Feature | Official Download | Office 365 Installer | | | :--- | :--- | :--- | :--- | | Size | 3–4 MB web installer | ~5 MB | ~5 MB | | Offline Installation | No | No | Yes | | Select Components | Limited (mostly full suite) | No | Full control | | Version Choice | Latest only (forced) | Latest only | 2013, 2016, 2019 | | Project/Visio | Separate download | Subscription only | Integrated install | | Requires MS Account | Yes | Yes | No | | Support | Official Microsoft | Official | Community forums |
: It allows users to download the necessary files and create a custom for offline installation later. Built-in Utilities | Feature | Official Download | Office 365
: Directly accesses Microsoft's CDN to download the latest builds for the selected version. Security and Support Considerations
: Can configure update channels to control how often non-security features are updated. Security and Support Considerations | Feature | Official Download | Office 365