I'm still in the sense of understanding about it but, the easiest word for us to understand is that it's about ownership of a digital thing. Whether it is a historical tweet or those digital arts that can be made online and by buying it will make you the owner of it.

It's a craze just as the ICO but this time, the product isn't consistent as the tokens before. But it can be different things that can be sold online as an NFT. I'm still learning to know more about it because it just popped like mushrooms and it's everywhere.