Each social media platform has a different audience, content style, and algorithm behavior. This lesson covers the major platforms — Instagram (visual content, Reels, strong for lifestyle and D2C brands), Facebook (broader, older audience, strong for community groups and local business), LinkedIn (professional, B2B-focused), and YouTube (long-form and short-form video). Understanding where your target audience actually spends time is the first step before deciding where to focus your content efforts, rather than trying to be active everywhere at once.