Viral marketing is a promotional technique that aims to spread a campaign quickly and widely. When using this marketing strategy, content is created to encourage sharing by an initial target audience. The goal is to make it appealing and approachable enough to inspire the masses to engage. While viral marketing tactics have roots in word-of-mouth marketing, they amplify the power of peer recommendations by using social networks and other online channels. Viral marketing messages don’t just spread from person to person. When one person shares, you gain hundreds or even thousands of eyes on your campaign from their followers.