This is the first time I attend the TV technology workshop, it was well organized because of ABU seems to be the biggest in Asia market. Just to understand the abbreviation of the title already made me confused, it is really another industry.
OTT = Over The Top From my understanding, you need an OTT TV box with the internet, so it is like a computer with TV function and watches it on the TV screen, in the backstage system, you can browse the App you had on your phone, just it is a TV version. You text by your remote controller with 4 typical colors: red, blue, yellow, green.
DVB = Digital Video Broadcasting is a standard
IBB = Integrated Broadcast-Broadband is a technology HbbTV = Hybrid Broadcast Broadband TV = Smart TV Including Video on demand, interactive advertising, voting, game, program-related service, developed market: Europe
If you have any question, please feel free to leave your comment, or discuss with me.