Thai startup Vacay has developed an eSIM service for international travellers, born from founder Sittidej Theppueotrakul's personal pain points with expensive roaming and local SIM cards. Building on 10+ years of software expertise, Vacay offers an integrated platform combining eSIM connectivity, travel insurance (via Insurverse), airport transfers, and flight comparison tools—positioning itself as a niche, quality-focused tech infrastructure play rather than a mass-market marketplace. The service targets Thai digital nomads and frequent travellers who need reliable internet for work across borders.