Mixing Licensing Models
You can mix both per-processor and server/CAL licensing models in your organization. If the Internet servers for your organization are segregated from the servers used to support internal applications, you can choose to use processor licensing for the Internet servers and server/CAL licensing for internal SQL Server instances and user devices.
Keep in mind that you do not need to purchase CALs to allow internal users to access a server already licensed via a processor license: The processor licenses allow access to that server for all users.
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