User-generated content, or UGC, refers to various forms of media like videos, blogs, photos, and audio that are created and shared publicly by end-users of online services and social media platforms. There are many types of UGC, including forums for discussion, blogs, and social networking sites like Facebook and Twitter where users can interact by posting and sharing content. UGC benefits companies by increasing user engagement, providing effective marketing through shared content, and improving search engine optimization.