BigBlueButton (BBB) is a virtual meeting application that allows users to use real-time audio, video and chat to communicate with online users. Additionally, it provides a presentation space, an interactive whiteboard and voting functionality. Importantly, it allows allocating students in breakout rooms so they can work in groups separately. Sessions can be recorded, although it is mainly indented for synchronous, live teaching, communication and collaboration.
BigBlueButton is available in all Sulis sites by accessing the Meetings tool (see video). It can cater for groups of up to (approx) 100 participants.
BBB documentation in ITD TopDesk
Running an engaging webinar session: watch the recording for great tips on using BBB breakout rooms
How to record a live lecture with BBB (for asynchronous lecture recording, use Panopto)