IMPORTANT: Microsoft 365 is a subscription-based service, which means you have to pay to renew it every year. If you want a one-time purchase, check Office Professional Plus 2021 for Windows here or Office Home & Business 2021 for Mac. Microsoft 365 Business Standard is a subscription service that lets you run the organization in the cloud. It connects employees to the people, information, and content they need to do their best work, from any device. What is the difference between Microsoft Office 2019/2021 and Microsoft 365? Office 2019/2021 is a one-time purchase, which means you pay a single, up-front cost to get Microsoft apps for one computer. One of the benefits of choosing Office 2019/2021 is that these licenses never expire. You have a perpetual right to use this license, you do not have this with Microsoft 365/Office 365. You will need to pay only in case you want to upgrade to the next major release, otherwise, you can use it as long as you want.Microsoft 365 is a subscriptio