LinkedIn is a professional networking platform that can be used as a digital marketing tool. Businesses can create a company page, post updates, and share content to reach a targeted audience. LinkedIn also offers paid advertising options, such as Sponsored Content and Sponsored InMail, which allow businesses to promote their products or services to a specific audience. Additionally, LinkedIn has a robust search feature that allows businesses to find and connect with potential customers and partners. Overall, LinkedIn is a valuable platform for B2B companies looking to expand their reach and connect with other professionals in their industry.