The world's largest social network will use its office in South Africa's largest city Johannesburg as a base from which to grow the roughly 120 million users it already has in Africa, 80 per cent of whom access the site via mobile devices.
Facebook hopes new users also leads to new advertisers 52 per cent of the company's advertising revenue is already earned outside of the US and Canada, according to a statement from the social network.
"Mobile is not a trend; it's the fastest development in communications we've ever seen," said Nicola Mendelsohn, Facebook's vice president for regions outside North America.
Sub-Saharan Africa is the world's second-fastest growing telecommunications market after Asia, underlining its importance to Facebook and rival networks, says South African digital strategist Toby Shapshak.
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Facebook already has offices in south and east Asia, centered in Hyderabad in India and Tokyo, according to its website.
South Africa vies for leadership in Africa's mobile market with Kenya, which has long been the epicenter of mobile innovation on the continent. Nairobi is often called the "silicon savanna," Shapshak said.
Expanding Facebook won't just be about adding African languages, but ensuring the social network is relevant to individual users and big advertisers, Shapshak said.