Training and development (T&D) programs are pivotal in enhancing employee performance, fostering organizational competitiveness in dynamic business environments. This study investigates the direct and indirect impacts of T&D on key performance indicators such as productivity, job satisfaction, and retention rates. Employing a mixed-methods approach, data were collected from 120 employees across manufacturing and service sectors in India via surveys and semi-structured interviews, analyzed using structural equation modeling (SEM) and thematic analysis. Findings reveal a significant positive correlation between comprehensive T&D initiative encompassing skill-building workshops, on-the-job training, and e-learning—and improved performance metrics, with a 28% uplift in productivity observed. Moderating factors like organizational culture and leadership support amplify these effects. The study underscores T&D\'s role in achieving Sustainable Development Goal 8 (decent work and economic growth) and recommends tailored programs for SMEs. Implications for HR practitioners and future research on digital T&D platforms are discussed.