How can I gift an Apple TV subscription?

Subscriptions can’t be gifted specifically. You can gift a generic Gift Card, but technically that can be used for anything Apple.

An Apple TV+ subscription can be changed to annual once the subscription is started. For new subscribers, that can be during the trial period, so paying only the annual price (~16% discount) in advance. For current and previous subscribers, the annual price can start after the current billing cycle.

You don’t.

Apple TV is a hardware box.

AppleTV is a free app that aggregates all video streaming services into one place.

AppleTV+ is Apple’s streaming service.

There is no yearly subscription.

You pay per month and it is tied to your Apple ID.