360 Deal is when the label get a piece of everything an artist produces.
Originally in the record industry, a label only gets the rights to an artist's music and then pay the artist a royalty. The label would provide marketing and promotion in exchange for owning the artist's catalog.
Then by like the mid 2000s when the record industry was dying, labels came up with the 360 deal, and the labels started getting a piece of their touring, songwriting, endorsement deals and merchandising.
But Motown was the first label to do a 360 deal. Them motherfuckers took everything. They even owned your fucking likeness.