Legend of Growth

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The Playbook

Growth essays for operators.

One operator-grade essay per week on attribution, CAC, creative testing, MMM, pricing, offers, landing pages, and paid growth.

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.

by Shamir Islam
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.

by Shamir Islam