This brand name is a playful take on the word "five".
The name "Fivoo" has only five letters and only two syllables. Two syllable names make popular global brands. Two syllable names are used by established brands like Sony, Visa and Subway.
Fivoo.com is a dot com domain. Dot com domains are the most sought after domain extension in the world, famously used by websites like youtube.com. When most people think of a website, they think of a dot com.