If you need massive cloud storage and collaborative editing (multiple people editing the same doc in real-time), get Microsoft 365. If you want to pay once and own the software forever without recurring fees, Office 2021 Pro Plus is the winner.
The term means that the software comes ready to use immediately after installation. Typically, when you purchase legitimate Office software, you must enter a 25-character product key and activate it online via Microsoft’s servers. A preactivated version bypasses this step—the activation is already embedded or "pre-cracked" into the installer. microsoft office 2021 pro plus preactivated top