NEW YORK – Microsoft Corp. said Tuesday that it has agreed to buy the popular Internet telephone service Skype SA for $8.5 billion in the biggest deal in the software maker’s 36-year history.
Buying Skype gives Microsoft access to a user base of about 170 million people who log in to Skype every month, using the Internet and Skype usernames as a complement to the traditional phone network and its phone numbers.
Microsoft said it will marry Skype’s functions to its Xbox game console, Outlook email program and Windows smartphones. All of these platforms already have other options for Internet calling, but the addition of Skype users would expand their reach, making them more useful.
Microsoft said it will continue to support Skype on other software platforms.
The sellers include eBay Inc. and private equity firms Silver Lake and Andreessen Horowitz.
Skype users made 207 billion minutes of voice and video calls last year. Most of that usage is free calling from computer to computer, which has made it difficult for the service to make money since entrepreneurs Niklas Zennstrom and Janus Friis started the company in 2003. An average of about 8.8 million customers per month, or just over 5 percent of the user base, pay to use Skype to call out to the regular phone network.