Programmatic ads present several challenges for startup growth, primarily due to their complexity and cost. Startups often struggle with budget optimization because programmatic platforms require significant investment for meaningful data analysis and targeting. Additionally, the lack of transparency in ad placements and pricing can lead to inefficient spending and difficulty measuring ROI. Another challenge is the high competition in bidding, making it hard for startups to secure premium ad space. Moreover, startups may face difficulties in ad fraud detection, which can waste resources and impact campaign effectiveness. These factors combined can slow down the scaling process and require startups to develop advanced expertise or rely on costly external agencies.