Abstract logo marks are the type of pictorial logo that does not have a recognizable image.
They are usually abstract geometric forms that are custom-made for a brand to express its uniqueness.
One advantage of this type of logo is that it gives brands enough room to design and create a logo that showcases and communicates their brand personality, values, and core message.
Some popular companies using abstract logo marks are Microsoft, Pepsi, Adidas, Nike, and Airbnb.