The story
Ustream was launched when the founders (John Ham, Brad Hunstable and Gyula Fehér) wanted a way for their friends in the US Army, who were deployed overseas in the Iraq War, to be able to communicate with their families. A product like Ustream would provide them with a way to talk to all of their relatives at once when free time in the war zone was limited.
Acquisition
Early investors included DCM Ventures and Softbank, the latter of which invested $20 million in 2010 with an option to invest additional capital. On January 21, 2016, IBM acquired Ustream for up to $150 million. It was combined with Aspera, Clearleap, and Cleversafe to form IBM's Cloud Video [IBM Watson Media] unit. IBM envisioned the use of its technology as part of an enterprise video offering.
From Wikipedia’s article on IBM Cloud Video, shared under CC BY-SA 4.0.4