Define 'viral marketing.'

Viral marketing is defined as a marketing strategy that encourages individuals to share content with their networks, thereby creating a rapid spread of information or awareness about a product, service, or brand. This approach relies heavily on the concept of word-of-mouth and social sharing, where engaging or entertaining content can prompt consumers to share it within their own circles, leading to a larger audience reach without significant expenditure on traditional advertising channels.

The essence of viral marketing lies in its ability to create content that resonates deeply with the audience, sparking their curiosity or elation to the point that they feel compelled to share it. Successful viral marketing campaigns often leverage creativity, humor, or relatable themes to entice sharing, effectively turning customers into brand advocates, which amplifies the reach and impact of the marketing efforts.

In contrast, the other options specify different marketing techniques or strategies that do not encapsulate the viral aspect. Organic search engine optimization focuses solely on improving website visibility through search engines, influencer marketing involves partnerships with individuals who have large followings but doesn’t necessarily entail the organic sharing principles of viral marketing, and television advertisements are traditional media channels that do not inherently prompt individual sharing in the same way that viral marketing content does.