Nintendo's seventh game console, released in the Eighth Generation of consoles and the successor to the Wii U. Known as the NX during development. The first production model went on sale on March 3rd, 2017.
The Nintendo Switch has two dedicated game controllers (one for each hand) called Joy-Cons. These can be attached to and removed from the console at will, essentially making it a hybrid home/handheld platform.
A smaller version, the Switch Lite, was revealed July 10th, 2019. The Lite is built strictly for handheld gaming. The Lite has no detachable Joy-Cons; the controllers are built into the console. It also has no HDMI output so cannot be connected to a TV like the original model Switch can.
The platform has enjoyed a positive reception and high sales numbers in the years since its release. In addition to carrying many popular flagship titles like The Legend of Zelda: Breath of the Wild and Super Mario Odyssey, the Switch has also become a welcoming home for many older games from last-gen systems. This led the Switch to be the de facto portable way to play popular older titles like Diablo 3, Dark Souls and Castle Crashers which had previously only been playable on non-portable platforms.
For tagging purposes, if the Switch has its Joy-Cons detached (or is being controlled by other compatible controllers), tag it as a game console (post #3259420, post #3528468). If the Switch has at least one Joy-Con connected or the console itself is the Lite, tag it as a handheld game console (post #3471232, post #3470179).