Design a Video Conferencing System

Functional Requirements:

• User registration, login, and authentication
• Schedule, edit, and cancel video meetings
• Join meetings via link or meeting ID
• Real-time video and audio communication between participants
• In-meeting chat (text messaging)
• Screen sharing during meetings
• Host controls: mute/unmute, remove participants
• Meeting recording and playback

Non-Functional Requirements:

• Support for up to 10,000 concurrent users
• Low latency for real-time video/audio (target <200ms end-to-end)
• High availability (99.9% uptime)
• Secure communication (encryption in transit)
• Cross-platform support (web, iOS, Android)
• Scalable architecture to handle peak loads
• Data privacy and compliance (e.g., GDPR)
• Consistent user experience across devices