Instagram is a visual platform where brands can interact intimately with audiences through photos and videos. As an app originally only for iPhones, it grew more slowly until it became available on Android devices as well. Facebook's acquisition of Instagram unleashed unprecedented levels of user engagement on the platform. Instagram has much higher engagement per follower than Facebook and relies more on organic reach, whereas Facebook reach has declined for brands with stricter algorithms. Brands should leverage Instagram by starting engaging hashtags, showing behind-the-scenes content, and selecting passionate followers to be brand ambassadors.