Launched in May 2003, LinkedIn is a social networking platform for the workplace, headquartered in Sunnyvale, California, USA. The purpose of the site is to allow registered users to maintain contacts they know and trust in their business dealings. Users can invite people they know to become part of their "Connections" circle. As of May 2020, LinkedIn has more than 690 million users.

LinkedIn has three different user products, which also reflect three core values. The first core value is reflected in the professional identity, which is presented as a personal profile, and the LinkedIn platform makes it easy to create, manage and share an online professional profile to show a comprehensive picture of yourself in the workplace. A well-developed profile is the key to a successful job search and professional networking. In LinkedIn, the profile contains six important parts. First, headshot display. A clear and generous headshot will immediately add visibility and authenticity to the profile. By displaying a professional image, profile views are immediately increased by 14 times. The second is the career overview. This is a comprehensive overview of your career background, field, goals and interests. Third, work experience. Show work history, whether full or part-time, and provide details about the position so that visitors can quickly learn about the job. Fourth, educational background. A well-developed educational background will increase the competitiveness of your profile. Fill in information such as summer programs and exchange schools to show the full picture of yourself. Fifth, skills recognition. Add a variety of skills to get recognition from your contacts. The more recognition you get, the more attractive your profile will be. Sixth, recommendation letter. Invite friends, classmates, teachers or colleagues to write letters of recommendation, which will greatly increase the authenticity of the profile. It makes the skills and work experience more recognizable.

The second core value is the knowledge insight, focus on industry information, learn from people's viewpoints, learn professional knowledge, improve professional skills, and share business insights. In the fast-changing Internet era, grasping the pulse of the market and gaining knowledge and insights are the basis for maintaining professional competitiveness.

The third core value is in business opportunities. Find classmates, colleagues and partners, search for jobs and companies, and explore unlimited opportunities. You can build and expand your network, master the industry information, and let the opportunities connect with you actively to help you develop your career potential.