Skype provides a telecommunications platform that offers free video chat and voice calls to internet-connected devices.
Founded in 2003 BY Jaan Tallinn, Janus Friis, Niklas Zennström, it is headquartered in Luxembourg. Skype is operated by Skype Technologies, a division of Microsoft.

1#  In September 2005, eBay acquired Skype for $2.6 billion.

2# Microsoft bought Skype in May 2011 for $8.5 billion, replacing their Windows Live Messenger with it. 

3# In 2019, Skype was announced to be the sixth most downloaded mobile app of the decade, from 2010 to 2019.