pod service is an abbreviation for “print on demand service.” A “pod service” allows individuals and businesses to sell custom-designed products (like t-shirts, mugs, posters) without holding any inventory. The “pod service” handles the printing and shipping of the products directly to the customer when an order is placed. Popular examples of “pod service” providers include Printify and Printful. This model is widely used for selling items without the risks associated with traditional inventory management and upfront printing costs.