The Japanese firm has been trying for years to counter a shrinking market at home and Viber's 280-million strong global customer base was key to expanding Rakuten's business, which include e-commerce, a baseball team, a web-based travel service and Internet bank, it said.
Viber's offerings let users make Internet-based calls on smartphones and computers, similar to rival Skype.
"As our company seeks to become the world's number-one Internet service company, a number of new digital contents that accompanies this purchase... Will enable us to explore a new market," Rakuten said.
Israeli entrepreneur Talmon Marco founded Viber in 2010 and the firm recently started an instant messaging service for desktops allowing users to call non-Viber users' mobile phones, in a challenge to Skype, which is owned by Microsoft.
Rakuten generates about USD 4.0 billion in annual revenue from its main businesses, the online shopping mall with tens of thousands of merchants, travel service and web-based bank.
But most of its revenue and its millions of members are in Japan, where its dominance is increasingly under threat from other Internet giants including Amazon and Yahoo Japan, while it faces a shrinking domestic market in a country with a rapidly ageing population.
It also owns Singapore-based video-on-demand provider Viki.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
