Costco is an American multinational corporation operating a chain of membership-only warehouse clubs. Founded in 1976 in San Diego, it became the world’s fifth-largest retailer. Offering bulk items at discounted prices, Costco sells everything from groceries to electronics. Its private label, Kirkland Signature, is known for quality at competitive prices. The company’s strategy focuses on member satisfaction and high-volume sales, ensuring its continued global success and strong, ongoing customer loyalty.