This study explores the efficacy of online advertising and the key components of the marketing mix and communication mix. It describes the four components of the marketing mix, namely product, price, place, and promotion, and the key elements of the communication mix, including personal selling, public relations, advertising, sales promotion, and direct marketing. The study also explains how social media channels like Snapchat, Facebook, LinkedIn, and Twitter are used as part of a company's communication strategy with examples. The effectiveness of social media content is also discussed.