This document provides an overview of key digital communication and social media platforms that businesses can use to connect with audiences. It discusses popular social networks like Facebook, Twitter, LinkedIn, Instagram, Snapchat, YouTube, Pinterest, and TikTok. For each platform, it describes what it is, who typically uses it, and how businesses can leverage it for marketing, advertising, and engaging customers. The document also covers the role of influencer marketing in building trust and expanding a business's reach. It defines online word-of-mouth marketing and how businesses can benefit from greater customer engagement, expanded reach, and insights from user-generated content and reviews.