Training and development refers to improving employee performance through learning and development opportunities. It aims to develop employee competencies, improve performance, and meet future organizational needs from within. Training needs are assessed through analyzing individual and group performance deficiencies. Methods to assess needs include performance appraisals, interviews, and analyzing organizational goals. The training process involves assessing needs, designing instructional programs, delivering training, and evaluating impact on performance. Training benefits both employees through skill development and the organization through improved productivity, quality, and competitive advantage.