2
If you are a professional like having many years of experience, then of course it's nothing complicated, otherwise it will not be easy for you. Zerocoding tools can already cover most business tasks. And instead of reinventing the wheel, you can launch an MVP in a few days or test a hypothesis at minimal cost.
OmiSoft | Software Development CompanyOmiSoftOmiSoft is a full-service software development company of engineers, designers, and developers.Mobile app development and custom software solutions.
3
True, I don’t know what your requirements for such programs are, but the races are not satisfied with anything, then order from 
the creation of a unique platform for videoconferencing and webinars only. We ordered such a platform and are satisfied because it has the ability to manage 30 participants in a single video call, share files and documents during a video call, a file repository for common items that can be downloaded after the chat ends, screen sharing with the ability to share the entire screen or a specific tabs/windows on your device, video call recordings that could be stored and viewed or downloaded later. Maybe you don't have enough 
Trembit - Video streaming applications development companytrembit.comTrembit provides custom video streaming software to improve real-time communication: Online conferencing systems, e-Learning platforms, Games, Live auctions, Internet messengers
