https://techcrunch.com/2019/03/28/amazon-prime-members-get-a-free-year-of-nintendo-switch-online-through-twitch-prime/

You may have forgotten about Twitch Prime, but the company is adding an interesting new perk for Nintendo Switch owners. The company is giving out up to one year of Nintendo Switch Online, the subscription service that lets you play online multiplayer games and access NES games.

If you’re an Amazon Prime or Prime Video subscriber, you automatically become a Twitch Prime member once you link your accounts together — Amazon owns Twitch. Twitch Prime gives you access to free loot, such as in-game skins for Apex Legends or Call of Duty Black Ops 4, as well as free (mostly indie) games.