Final answer:
To provide employees with the soonest access to new Microsoft Excel features, the Microsoft 365 administrator should subscribe to the Current Channel, which offers the most immediate updates.
Step-by-step explanation:
If you are a Microsoft 365 administrator seeking to provision the latest Microsoft Excel feature to your employees as soon as it is available, you should subscribe to the Current Channel. The Current Channel receives the newest features and updates on a regular basis, often monthly. This will provide the quickest access to all the latest updates and features.
There are other channels, like Monthly Enterprise Channel and Semi-Annual Enterprise Channel, but these receive updates less frequently. The Monthly Enterprise Channel (Preview) can also be considered for early access to features for validation purposes before they are released in the Monthly Enterprise Channel. However, for immediate availability of features, the Current Channel is most suitable.