Full AWS Practitioner Certification Question

A media production company is preparing its website to host a high-profile live concert event. The site will feature real-time video streaming of the live performances, and once the event concludes, the videos will be available for on-demand playback. Because the event is expected to draw a global audience, the company wants to ensure the best possible streaming experience for viewers in all geographic regions. Which AWS service will most effectively improve performance for both live and on-demand video content?