Service-based companies like Infosys, TCS, and Tech Mahindra focus on mass hiring, especially from Tier-3 colleges.Service-based companies hire in bulk because freshers are an investment and a risk, and they offer growth opportunities beyond entry-level packages.Switching companies strategically can help individuals grow their careers and secure better roles and higher salaries.Experience is important for career growth, and focusing on gaining hands-on experience and working on impactful projects is crucial.