What is the Difference Between a Contest and Sweepstakes?

Sweepstakes and Contests are fundamentally different in one way: How the winner is selected.
Sweepstakes are a game of chance: The winner is randomly selected.
Contests are a game of skill where judging based on criteria determines a winner.
Prizes are the whole reason to run a promotion. They serve as the incentive for consumers to participate in a promotion, and we happen to think they are the best part!