Ключевые слова: attendee, audience, auditorium, business, businessman, businesspeople, businesswoman, computer, conference, congress, connected, course, creative, crowd, dark, data, delegate, developer, event, hall, information, inspiration, international, internet, knowledge, laptop, leadership, lecture, male, man, motivation, network, online, participants, people, portrait, presentation, professional, program, seminar, social, software, solution, speaker, speech, summit, tech, technology, training, visitor,