While Facebook is a great platform for Business-to-Consumer (B2C) marketing, LinkedIn is the best for Business-to-Business (B2B) marketing. With LinkedIn you can reach people in different groups, companies and even industries. LinkedIn Sales Navigator allows you do communicate with people in LinkedIn easily.
LinkedIn Sales Navigator operates in your Gmail and provides a block of information for your contacts so that when you’re ready to communicate with them you can easily form a connection from all the information displayed to you. It works kinda like a mini CRM.