RingCentral is a cloud-based communication and collaboration platform that provides businesses with tools for voice calls, video conferencing, messaging, and team collaboration. It allows users to connect from anywhere, making it easier for remote teams to communicate effectively. The platform integrates with various applications, enhancing productivity and streamlining workflows. With features like virtual phone numbers and call management, RingCentral caters to businesses of all sizes, helping them improve customer service and internal communication.