Joseph Lee, the founder of Supademo, an AI-powered product demo tool, shares growth tactics starting with a 4-step SaaS validation framework. The framework involves problem identification, focus definition, hypothesis development, and solution delivery. Supademo's initial growth relied on unscalable tactics, such as manual outreach and leveraging networks. Viral loops, accounting for 70% of Supademo's acquisition, and SEO, contributing 20-25% of signups, were crucial strategies. Sidecar products (complimentary free tools), co-marketing, and reverse trials also drove growth.