Enhancing DV360 Campaign Performance

As a programmatic trader with a year of experience in setting up DV360 campaigns, I've recently graduated and am eager to recommence my career. During recent job interviews, I've been asked about optimization strategies on DV360, an area I didn't cover in my previous role. Interviewers presented various scenarios on how to optimize campaigns effectively. How can I learn specific optimization techniques for DV360 to improve my skills?