automatic update; automatic renewal
Used in computing for software/app updates, and in subscription contexts for automatic contract renewal.
It's convenient to keep automatic app updates turned on.
This service continues by automatic renewal.
手動更新 means manual update, the opposite of automatic update.
更新 is the general term for update or renewal; 自動更新 specifies that it happens automatically.
Compound of 自動 (automatic) and 更新 (update/renewal).