One of South Korea’s hottest mobile startups isn’t so much one company as it is 71 companies.

Yello Mobile, launched two years ago, has grown at a brisk rate by gobbling up dozens of other startups in mobile commerce, mobile marketing and local services.

To fuel those deals, Yello Mobile has been busy raising money of its own. Late last year, the Seoul-based company wrapped up its third round of funding, giving it a valuation of about $1 billion.

Image: Yello Mobile founder Lee Sang-hyuk Yello Mobile