WP REST API
I would like to speak about WordPress JSON API and new possibility what developer can do with WordPress. With REST API now we can easily fetch content in JSON format, but we can also much easily communicate between frontend and backend. The idea is to motivate developer to use API for creating new cool things with WordPress.
Why do you want to speak at #wcbg:
I am one of the organizer of WordPress community in Croatia and I have strong connections with Serbian community, I was one of the speakers on WordPress Meetup in Belgrade last year. The reason why I want to speak in WordCamp Belgrade is to explain what we can do with REST API. API gives us the opportunity to create a totally new things with WordPress.