They give clients "permission" to access servers. If a client accesses a server and there's no CAL for that client, you're in violation of your licensing agreement. They're kept on paper basically.

As Microsoft phases out older Exchange Server versions, IT leaders are facing new decisions about how to stay compliant and cost-efficient. Understanding the current licensing landscape for Windows ...

At least once a month I run into a seasoned IT professional who will finally admit that they’ve never quite figured out how to license CALs (and at least once a quarter that someone asks “What is a ...

As of August 1, Microsoft will raise the prices of a number of its User client-access licenses (CALs) by 13 percent. The affected CALs are for on-premises, not cloud, products. The prices of Device ...

Organizations using servers with more than 16 cores need to "stack" multiple Windows Server licenses to cover all cores, ensuring compliance with licensing requirements. Here's how. Licensing a ...