OTT stands for “Over-The-Top”
Described by Wikipedia: Over the top (OTT) media service is a streaming media service offered directly to viewers over the Internet. OTT bypasses cable, broadcast, and satellite television platforms that traditionally act as a controller or distributor of such content.
The term is most synonymous with subscription-based video-on-demand services that offer access to film and television content (including existing series acquired from other producers, as well as original content produced specifically for the service), including Prime Video, fuboTV, Hulu, Netflix, Hotstar, Zee5, Now TV, Sling TV, MercTV, PlutoTV, Shudder and Sky Go as well as a wave of "skinny" television services that offer access to live streams of linear specialty channels similar to a traditional satellite or wireline television provider, but streamed over the public Internet, rather than a closed, private network with proprietary equipment such as set-top boxes.
Over the top services are typically accessed via websites on personal computers, as well as via apps on mobile devices (such as smartphones and tablets), digital media players(including video game consoles), or televisions with integrated smart TV platforms.
Content being used by OTT providers
OTT television, usually called online television or internet television or streaming television, remains the most popular OTT content. This signal is received over the internet or through a cell phone network, as opposed to receiving the television signal from a terrestrial broadcast or satellite. Access is controlled by the video distributor, through either an app or a separate OTT dongle or box, connected to a phone, PC or television set. By mid-2017, 58 percent of US households would access one in a given month and advertising revenues from OTT channels exceeded those from web browser plug-ins.
OTT messaging is defined as instant messaging services or online chat provided by third parties, as an alternative to text messaging services provided by a mobile network operator. An example is the Facebook-owned mobile application WhatsApp, that serves to replace text messaging on Internet-connected smartphones. Other providers of OTT messaging include Viber, WeChat, Skype, Telegram and Google Allo. 
OTT voice calling, usually called VOIP, capabilities, for instance, as provided by Skype, WeChat, Viber, and WhatsApp use open internet communication protocols to replace and sometimes enhance existing operator-controlled services offered by mobile phone operators
Why is it important to entrepreneurs?
Now for the first time ever entrepreneurs can be present on TV, mobile and web streaming platforms, so that your audience can find you no matter what device they use; your content being promoted on a whole bunch of social media platforms; your website interfacing with your audience on your TV channels; your viewers signing up for your products; you being able to live-cast at a click of a button to all devices, to every platform and TV channel and so much more.
With TTVN’s powerful streaming platform, you will not have to worry about whether or not your ideal customer is on this platform or that one? Which platform should I market to? In fact, those days of asking those questions are GONE. Because, now, with TTVN’s cloud-based, SaaS-based streaming platform you can broadcast on every single top tier platform available and you can do it with a click of a button.
TTVN will truly set you apart and save you time and money. By marketing yourself, your products, and your services to TV, Radio, Internet, Webinars and so much more all at the same time. This is the power that TTVN is bringing to your doorstep in December.