I was the only speaker in this event, subjects were many and related to each other such as Scaleble Web Apps, React vs Angular2, Relay, Redux, GraphQL, RestAPI and CRUD Opearations. I started speaking from single page applications(SPA) and non-SPA applications.Then we investigated advatages and disadvantages of SPA approach and major SPA libraries/frameworks. Then React.Js has chosen hypothetically due to reasons that same as big companies have.
After that, we went deep into React.Js. In the end of speech, I help many companies and developers that joined the event about selecting right library and tools according to project and their team capabilities. It was nice to see major web companies' CEO and CTO in that presenation.

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