Let’s start with the basics.
2D stands for 2 dimensional – this means that 2D animation takes place in two dimensions, as opposed to 3D animation, which, you guessed it, takes place in three. 2D animation is widely considered to be the ‘traditional’ form of animation, stemming from the pre-digital age where most animation would be drawn by hand, frame by frame.
These days, it’s much quicker to produce 2D animation. The use of various digital software on computers has made the 2D animation process much simpler and slicker – meaning that 2D animations can be produced on demand and in a cost effective way.