Nsp Portable Exclusive: Super Smash Bros Ultimate

This is the exact format Nintendo uses for games downloaded directly from the eShop. The Benefit:

: On newer hardware like the Nintendo Switch 2, the game exhibits faster loading times and improved visual clarity, even without an official patch. II. The NSP Format and Local Installation super smash bros ultimate nsp portable

I'm sure this has been asked before but what does XCI and NSP stand for? If anything. This is the exact format Nintendo uses for