Direct answer
It depends on the provider. Some lock you into a long contract, some are month to month, and some ask for a short minimum term so the setup work is worth doing. JUJUBOOST uses a two-month minimum, then continues month to month, and you can cancel with 30 days notice. There is no long-term contract to sign and no cancellation fee. The minimum term exists only to cover the initial setup of your site, visibility, and reporting.
Managed setup needs a real window. The account has to open, the business facts have to arrive, the first pages and local visibility need to go live, and early measurement needs time to become useful. A short two-month minimum covers that start. After that, the service stays month to month instead of locking the owner into a long retainer.
After the two-month minimum, send notice that you want the service to end. The account continues for 30 days of notice, then stops. There is no separate cancellation fee and no long contract to unwind.
See the public packages and exit terms before anyone asks for a demo.