PORT INC. operates a performance-based contract support business (成約支援事業) that integrates web marketing and inside sales to help corporate clients minimize risk in recruitment and sales promotion activities. The company primarily serves two verticals: the human resources domain, where it operates Japan's largest new-graduate job-hunting platforms including 'Shukatsu Kaigi' (company review site with ~630,000 members) and 'Career Park!', offering matching, agency, and alliance services; and the energy domain, where it runs utility comparison and switching platforms such as 'Ene Choice' and 'Hikkoshi Tetsuzuki.com' for electricity and gas providers. Targeting 'non-routine, high-stakes' decision markets for both users and clients, the company leverages proprietary web traffic generation and in-house inside sales capabilities to achieve high conversion rates, generating approximately 900,000 annual contract completions as of FY March 2025.