An internship or work placement gives you the opportunity to gain insight into professional practice. You will acquire knowledge and skills which may be useful for your studies and your career after graduation. You can also experience the daily routine in the working world and see how different companies work.
During an internship you can explore many career options by trying out different jobs, and it could help you decide which career you would like to pursue in the future. Employers may also use interships as a way of selecting suitable employees.