The US based tech giant company Microsoft announced his office is officially know as Microsoft 365
If you have a paid subscription for Microsoft office then you are free to upgrade
But in case if you don't have any Microsoft office subscription then you have to pay for it
Microsoft say Microsoft 365 has access to apps like Word, Excel, PowerPoint, and Outlook.
But in case if you don't have paid subscription of Microsoft office then you can simply go to Google docs.