Duolingo avoids a one-size-fits-all video strategy. They use TikTok for capitalizing on trends due to its virality mechanics. YouTube Shorts, which favors original content, is used for building out the mascot's lore. Instagram serves as an informational hub and a home for 'millennial-core' content.

To amplify word-of-mouth, Duolingo identified existing sharing behavior by temporarily tracking user screenshots. They found hotspots like streak milestones and funny challenges, then invested in designers to make these moments even more shareable.

The company's head of marketing convinced the CEO to hire young marketers with unconventional resumes that didn't fit the typical 'perfect GPA' mold. This talent created the brand's wildly successful, 'unhinged' TikTok account, which became a major user acquisition channel, proving the value of diverse hiring perspectives.

Duolingo's team achieves its speed by operating under the belief that 'fear is incredibly expensive.' This mindset empowers them to be their own approvers, accepting the small risk of having to delete a post in exchange for the immense creative and engagement upside that comes from moving at the speed of culture.

The viral 'Dead Duo' campaign originated from a product team's A/B test of new app icons. When both icons performed equally, marketing was given seven days to build a campaign around the 'dead eyes' version. This demonstrates extreme agility and opportunistic collaboration between product and marketing.

When Duolingo paused its "unhinged" owl mascot social media strategy, daily active user growth saw its smallest increase in years. This direct correlation demonstrates that for some consumer apps, the social media team can be as crucial for growth as the engineering team, justifying top-tier compensation.

The legendary phrase "Software is Eating the World" wasn't a calculated slogan; it was an offhand comment Marc Andreessen made to a reporter. The marketing team's genius was recognizing its power and transforming it into a formal op-ed. This highlights the importance of listening for potent ideas in everyday conversation.

Instead of traditional strategy, Duolingo's team applies principles from improvisational comedy. Core tenets like 'yes, and' (building on ideas) and 'commit to the bit' (going all-in on a concept) create an environment that encourages bold, reactive, and consistently creative content without internal blockers.

Instead of just simplifying ideas, focus on making them highly repeatable and shareable, like a meme. This involves distilling a concept into a single, evocative phrase or visual that people will want to reuse, ensuring the core message propagates organically through an organization.