There are 2 versions of Office 2019 that you can use for business. The advantage of Office 2019 over Office 365 for companies is the one-time purchase. So with Office 2019 you make the investment once and you never have to do it again. You pay Office 365 per month / quarter / year. You must purchase a license for Office 2019 for each computer. There is no Office 2019 subscription for multiple PCs.
The Office 2019 business packages are: