An advertiser creates marketing campaigns to promote a variety of products or services. As an advertiser, my job duties include conducting market research, collaborating with the sales and design teams to create targeted ad campaigns, reviewing multimedia ads to ensure consistent brand voice, and monitoring the performance of ad campaigns to measure return on investment and to inform future marketing campaigns. The digital, print, radio, and video advertisements you develop as an advertiser are essential to how your client’s brand engages with customers.