Ключевые слова: attentive, audience, audience focus, auditorium, background, blur, business, business event, businessman, collaboration, communication, conference, corporate, crowd, dark, discussion, education, engagement, event, focus, group, hall, ideas, information, inspiration, interacting, knowledge, learning, lecture, lighting, listening, meeting, motivation, people, presentation, professional, public speaking, seminar, speaker, speech, stage, talk, technology, training, workplace, workshop,