Avid Ventures starts with small $0.5-1M checks at Series A to prove their value to founders, then reserves most of their $68M fund to write much larger follow-on checks at Series B once they've "earned the right" to invest more. The fund acts as a "strategic finance" partner by building detailed five-year models and analyzing unit economics with early-stage companies, while focusing on underwriting non-obvious product-market fit through retention curves and expansion data rather than waiting for conventional revenue traction.