MNTN (formerly known as Mountain Advertising) is a digital advertising agency that specializes in programmatic advertising. The company was founded in 2016 and is headquartered in Los Angeles, California. MNTN offers a range of services, including display advertising, video advertising, and connected TV advertising. The company's platform uses artificial intelligence and machine learning to optimize ad campaigns and improve performance. MNTN has worked with a variety of clients across different industries, including e-commerce, finance, and healthcare.