LinkedIn is a global social networking platform primarily used for professional networking and career development. It allows individuals to connect with colleagues, potential clients, and job opportunities, while also enabling businesses to share content, post job openings, and build their brand presence. Founded in 2002 and acquired by Microsoft in 2016, LinkedIn serves as a valuable resource for job seekers, recruiters, and companies alike. The company is headquartered in Sunnyvale, California, USA.