Marketing as a discipline involves all the actions a company undertakes to draw in customers and maintain relationships with them. Networking with potential or past clients is part of the work too and may include writing thank you emails, playing golf with prospective clients, returning calls and emails quickly, and meeting with clients for coffee or a meal.At its most basic level, marketing seeks to match a company's products and services to customers who want access to those products. Matching products to customers ultimately ensures profitability.