Dark social in B2B refers to the sharing of content and information through private channels, such as email, messaging apps, and direct links, that cannot be tracked by traditional analytics tools. This type of social sharing is often used by professionals in the business-to-business (B2B) sector to share valuable and relevant content with their colleagues and peers, without the content being visible to the public. Dark social in B2B allows for more targeted and personalized sharing, making it a valuable tool for businesses looking to reach and engage with their target audience in a more organic and authentic way. However, it also presents a challenge for marketers as it is difficult to measure and track the impact of dark social on their marketing efforts.