LinkedIn is a social networking platform designed primarily for professionals. It allows users to create profiles showcasing their work experience, skills, and education, similar to an online resume. Users can connect with colleagues, network with industry professionals, and join groups related to their fields. Employers often use LinkedIn to post job openings, search for candidates, and conduct background checks. Additionally, it's a space for sharing industry news and insights, making it a valuable resource for career development and professional growth. Overall, LinkedIn serves as a hub for professional networking and career-focused resources.