Skype became the first unicorn business founded in Estonia, and was sold to eBay for $2.6bn in September 2005.

[1] In 2010, Annus' contribution was recognised with the award of the Order of the White Star, 5th Class, by the president of Estonia.

Annus studied for a mixed MBA/Computer Science degree at Tallinn Technical University before managing multiple small ICT teams and projects.

Subsequently, Annus and his co-founders from Skype started Ambient Sound Investments, a private asset management company, which funded more than 50 early stage new ventures worldwide.

[3] On 13 July 2020, Annus' wife issued a press release announcing that her husband had died of an unexpected illness.