Switch lets you easily access eShops from different regions

Switch is region free in just about every way possible. Physical games can be played regardless of the region where you purchase them. And on the eShop, accessing different versions of the store is simple.

Let’s say you wanted to load up the Japanese eShop on a North American Switch. As long as you have a Japanese account, you can log in to the Japanese eShop on the system. Basically, you just need a relevant account in the eShop region you want to access.

Just one word of caution: games and DLC are paired together. That means both need to be from the same region in order to work properly.

Source 1, Source 2, Via