Ad agencies, or advertising agencies, are companies that create, plan, and manage advertising campaigns for businesses and organizations. They help clients promote their products or services through various media channels, including television, radio, print, and digital platforms. Ad agencies often employ creative professionals, such as graphic designers and copywriters, to develop engaging content that captures the target audience's attention. These agencies also conduct market research to understand consumer behavior and preferences. By analyzing data, they can tailor campaigns to effectively reach specific demographics. Additionally, ad agencies may offer services like brand strategy, public relations, and social media management to enhance a client's overall marketing efforts.