For Switch Online subscribers only.

Today’s Animal Crossing: New Horizons Direct was peppered with little spicy nuggets of information on the upcoming game, including rock solid confirmation that while the software will remain incompatible with Nintendo Switch Online’s existing cloud back up system, Nintendo will indeed store your desert island’s save data on their servers in case something calamitous happens and you are permanently parted from your Switch.

Read the full article on nintendolife.com

Original source: http://www.nintendolife.com/news/2020/02/recovering_your_animal_crossing_new_horizons_save_data_from_nintendo_is_a_one-time-only_deal