Real license key is included for 1 computer! not patch or activator.

Visio Professional 2021 makes it easy for teams to work together, with new collaboration capabilities that allow multiple team members to work on a single diagram at the same time, without having to worry about version conflicts. Visio Professional 2019 also has a variety of new and updated shapes, an improved ability to change the look of your diagrams and shapes.

http://microsoft.com