Download: Best if you just want to see upcoming meetings in your calendar once. You'll need to download again for updates.
Subscribe: Best for staying up-to-date automatically. Your calendar will refresh with new meetings as they're added.
Outlook: Click to automatically add the calendar subscription.
Google Calendar: Opens Google Calendar to add the subscription.
Apple Calendar: Works on Mac and iOS devices.
Copy URL: For other calendar apps — paste the URL in their "Add Calendar" or "Subscribe" feature.