I will install bigbluebutton server for online web conferences or online learning management system where people can create online sessions and i will do full costomization on bigbluebutton with greenlight API and will provide your branding to new bigbluebutton server, if you have more than 200 users we can install scalelite load balancer for multiple bigbluebutton servers. Requirment: Linux Ubuntu 16.04 RAM 8GB CPU Cores 4 HDD 200GB as per your requirements.