Social media analytics provide valuable insights into the performance of marketing campaigns. Key metrics to focus on include reach, engagement, click-through rate (CTR), and conversion rate. Reach measures the number of people who see your content, while engagement tracks likes, comments, and shares. CTR indicates the percentage of people who click on your content, and conversion rate measures the percentage of users who take the desired action, such as making a purchase. Regularly analyzing these metrics allows businesses to refine their social media strategy, optimize content, and achieve better results from their marketing efforts.