Buffer is a social media management tool that helps users schedule and publish posts across various platforms like Facebook, Twitter, and Instagram. It allows individuals and businesses to plan their content in advance, ensuring a consistent online presence without the need to post in real-time. With Buffer, users can analyze engagement metrics to understand how their posts perform. This data helps in refining social media strategies, making it easier to connect with audiences and improve overall engagement. The platform is user-friendly, making it accessible for both beginners and experienced marketers.