Push strategy involves using marketing channels to directly promote products and services to consumers through avenues like trade shows, advertisements, and direct selling. The goal is to get the product in front of consumers and reduce the time until purchase. Pull strategy generates interest and demand among target audiences so that consumers demand the product from retailers themselves through strategies like advertising, promotions, and discounts. The key differences are that push strategy moves products through intermediaries to consumers without demand, while pull strategy involves promotion directly to consumers who then pull the product themselves.