Virtual meetings allow team members in different locations to interact without travel costs through tools like instant messaging, telephone conferences, and video conferencing. Video conferencing combines live video and audio so participants can see each other, demonstrate products, and share visual information. There are two types of video conferencing systems: room systems for larger meetings that require specialized equipment, and desktop systems that use webcams and monitors for smaller individual or group meetings. Web-based meetings combine instant messaging, shared workspaces, video conferencing, and tools like virtual whiteboards in one sophisticated system, allowing attendees to participate from any device anywhere in the world.