Author

Shamir Islam

2 essays published

Founder of Legend of Growth. 10+ years in growth marketing across DTC, edtech, and consumer health: most recently in Paris at Timeleft (consumer), before that Marketing Manager at Nutrisense (US health DTC), and Manager of Analytics & Growth at 10 Minute School (Bangladesh's largest edtech). MSc in Global Innovation & Entrepreneurship from emlyon.

Selected essays

Paid Acquisition · May 4, 2026 · 1 min read

Paid spend that compounds

Most agencies optimize for the campaign that pops once. We optimize for the system that pops every quarter.
Attribution · Apr 29, 2026 · 2 min read

Three attribution mistakes I see at every $1M+ DTC brand

iOS 14 broke last-click. GA4 broke data-driven attribution. Then everyone discovered MMM and pretended it was new. Three patterns I see at every brand we audit, and what to do instead.

Shamir Islam

Paid spend that compounds

Three attribution mistakes I see at every $1M+ DTC brand