LinkedIn APIBring the power of the world’s largest professional network to your apps. By using the LinkedIn API you can use several LinkedIn services. LinkedIn has examined the value of offering an open API to all developers and found the said program not to be in the company’s best interest. It would be restricting broad LinkedIn API use to a few simple use cases, including those specified by LinkedIn itself –Allowing members to represent their professional identity via their LinkedIn profile using the Profile API. Enabling the members to post certifications directly to their LinkedIn profile with the Add to Profile tools. It also helps the members to share professional content to their LinkedIn network from across the Web leveraging the Share API. Enabling companies to share professional content to LinkedIn with the Company API. Reduce friction and get more sign-ups by allowing users to sign in with LinkedIn instead of creating a new account. Minimize the cost and time associated with implementing your own login, profile management, password change and recovery workflows. Personalize your sites and apps with up-to-date member profile data.How to use LinkedIn API?Before going forward with how to use the LinkedIn API, one must first know the various data formats as well as he must understand the request throttling processes.