A horizontal marketing system is when two or more companies at the same level in the supply chain join together for marketing purposes to take advantage of new opportunities. It combines the financial, production, and marketing resources of the partner companies with the goal of increasing customer base without increasing marketing budgets. Some benefits include reduced costs through bulk purchasing negotiations, utilizing each other's knowledge and solutions, and reducing waste. However, disadvantages can include reduced flexibility and failing to create value if synergies do not materialize despite implementation costs. Examples given are banks placing ATMs at supermarkets and manufacturers combining operations to meet large retailer demands.