Keywords
K21, Marketplace bilateral, empleo esporádico juvenil, plataforma digital, efectos de red locales, confianza de proximidad, modelo freemium, LTV/CAC, masa crítica, esponsorización, desintermediación, escalabilidad, matching, comunidad cerrada., Bilateral marketplace, youth gig employment, digital platform, local network effects, proximity-based trust, freemium model, LTV/CAC, critical mass, sponsorship system, disintermediation, scalability, matching, closed community.