| Feature | Microsoft Office 2016 | Microsoft Office 2021 | | --- | --- | --- | | Collaboration | Limited collaboration features | Enhanced collaboration features, including real-time co-authoring and commenting | | AI integration | No AI integration | AI-powered features, such as automated suggestions and ideas | | Security | Basic security features | Enhanced security features, including data loss prevention and threat protection | | User interface | Familiar interface | Modernized interface with improved navigation and visuals |