ArcGIS Pro provides the flexibility to license the application with either the default Named User model, or by converting licenses to Concurrent Use or Single Use.
Many organizations that are accustomed to using the concurrent use licensing model for ArcMap have extended that model to license ArcGIS Pro. With a Concurrent Use license, your machine points to a License Manager Server for license authorization from a shared pool of licenses. You can choose the license level and extensions you want as long as the appropriate license is available. Concurrent Use licensing allows more users to have ArcGIS Pro installed on their machine than the total number of licenses. Simultaneous use of ArcGIS Pro is limited by the number of available licenses in the License Manager Server. Concurrent Use licensing is the same in ArcGIS Pro as it is in ArcMap.
As we approach the release of ArcGIS Pro 2.0, organizations using concurrent use licenses or Named User via Portal for ArcGIS will need to upgrade to License Manager 10.5.1 first, before upgrading to Pro 2.0. For users who currently have a previous version of ArcGIS License Manager and wish to migrate to the latest 10.5.1 version of ArcGIS License Manager, follow the instructions below:
1. Download License Manager 10.5.1
a. Log in to My Esri and go to My Organizations > Downloads.
b. In the Quick Search, type License Manager.
c. ArcGIS License Manager 10.5.1 should be the only result. Click View Downloads.
d. Make sure to choose the product appropriate for your organization's platform (Windows or Linux). Click Download.
2. Run the License Manager setup from your download
3. Follow the instructions to install the license manager to the desired location. At the end of the installation, ArcGIS License Server Administrator appears.
4. Complete the authorization process and start the license service. If you choose to do this step at a later time, on Windows, you can access License Server Administrator from Start > Programs > ArcGIS > License Manager > License Server Administrator. On Linux, you can run License Server Administrator from the installation location using the following command: <installation_path>/arcgis/license10.5/LSAdmin.
The bottom line? Get your ArcGIS Pro licenses onto a 10.5.1 License Manager before upgrading to ArcGIS Pro 2.0 in order to have a seamless transition!